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BEGIN:VEVENT
SUMMARY:Vladimir Gerdjikov (Varna Free University & Institute of Mathemati
cs and Informatics\, Bulgarian Academy of Sciences)
DTSTART:20231108T100000Z
DTEND:20231108T110000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/1
DESCRIPTION:Title: Sine-Gordon equation: solitons\, applications\, integrability<
/a>\nby Vladimir Gerdjikov (Varna Free University & Institute of Mathemati
cs and Informatics\, Bulgarian Academy of Sciences) as part of AUTH HEP-TH
Seminars\n\nLecture held in Theory Seminar Room (4th Floor).\n\nAbstract\
nThe sine-Gordon equation has been discovered by Bäcklund 1870-ies as the
equation that describes the surfaces with constant negative curvature. He
also proposed a method for constructing non-trivial solutions\, which is
now known as the Bäcklund transformation. The interest to this equation w
as revived in the 1970-ies when it was discovered that it describes phenom
ena in nonlinear optics\, and that it can be solved using the inverse scat
tering method. I will demonstrate that the inverse scattering method appli
ed to sine-Gordon equation can be viewed as generalized Fourier transform
. Using it I will demonstrate that sine-Gordon equation allows a hierarchy
of Hamiltonian structures. In fact it is an infinite-dimensional complete
ly integrable Hamiltonian system which allows global action-angle variable
s.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/1/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Vladimir Gerdjikov (Varna Free University & Institute of Mathemati
cs and Informatics\, Bulgarian Academy of Sciences)
DTSTART:20231129T100000Z
DTEND:20231129T110000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/2
DESCRIPTION:Title: Sine–Gordon type equations and generalized Fourier transforms
\nby Vladimir Gerdjikov (Varna Free University & Institute of Mathemat
ics and Informatics\, Bulgarian Academy of Sciences) as part of AUTH HEP-T
H Seminars\n\nLecture held in Theory Seminar Room (4th Floor).\n\nAbstract
\nBy Sine–Gordon type equations we mean nonlinear evolution equations wh
ich\, like the Sine–Gordon equation allow Lax representation. We analyze
the mapping between the potential q(x\,t) of the Lax operator to the scat
tering matrix T(t\,λ) and show that it can be understood as a generalized
Fourier transform (GFT). The relevant generalizations of the usual expone
ntials are expressed in terms of the fundamental analytic solutions of L a
nd are known as ‘squared solutions‘ of L. Similar analysis is done als
o for the mapping between the time derivatives $q_t (x\, t)$ and $T_t (t\,
λ)$. This mapping also can be interpreted as GFT and uses the same ‘sq
uared solutions‘. These expansions allow one to linearize the class of n
onlinear evolution equations (NLEE)\, solvable by the inverse scattering m
ethod for L and to derive their fundamental properties: the description of
the class of NLEE and their hierarchies of Hamiltonian structures.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/2/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Vasilis Spanos (National and Kapodistrian University of Athens)
DTSTART:20231213T100000Z
DTEND:20231213T110000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/3
DESCRIPTION:Title: Supersymmetric Dark Matter Models\nby Vasilis Spanos (Natio
nal and Kapodistrian University of Athens) as part of AUTH HEP-TH Seminars
\n\n\nAbstract\nIn this talk we will revisit models that predict dark matt
er in the context of supersymmetric theories. In particular we will focus
on models that yield neutralino\, gravitino and/or primordial black holes
dark matter.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/3/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Damianos Iosifidis (University of Tartu)
DTSTART:20240124T120000Z
DTEND:20240124T130000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/4
DESCRIPTION:Title: Hyperhydrodynamics: Imperfect Fluids Emerging from Hypermomentu
m\nby Damianos Iosifidis (University of Tartu) as part of AUTH HEP-TH
Seminars\n\nLecture held in Theory Seminar Room (4th Floor).\n\nAbstract\n
We explore a new action formulation of hyperfluids\, fluids with intrinsic
hypermomentum. Brown's Lagrangian for a relativistic perfect fluid is gen
eralised by incorporating the degrees of freedom encoded in the hypermomen
tum tensor\, namely by including connection-matter couplings. Quite intere
stingly\, generic hyperfluids are imperfect\, since hypermomentum induces
such effects as bulk and shear viscosities as well as heat fluxes. The var
ious coefficients that appear in the first order expansion of hydrodynamic
s can now be deduced from a Lagrangian formulation\, given a geometrical i
nterpretation and a suggested microscopic description in terms of hypermom
entum. This connection between hypermomentum and dissipative fluids could
shed new light on the physics of relativistic hydrodynamics. The applicabi
lity of the new formalism is demonstrated by exact cosmological solutions.
\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/4/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Christos Charmousis (University of Paris-Saclay)
DTSTART:20240207T100000Z
DTEND:20240207T110000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/5
DESCRIPTION:Title: Black holes with primary hair\nby Christos Charmousis (Univ
ersity of Paris-Saclay) as part of AUTH HEP-TH Seminars\n\n\nAbstract\nWe
will construct and analyse explicit solutions in scalar tensor theories pa
rametrised by two independent charges : their ADM mass and an additional p
rimary hair associated to a minimally coupled scalar field. When the scala
r charge is set to zero one obtains a Schwarzschild black hole whereas the
primary hair\, when switched on gradually changes the black hole solution
. A special relation between the two can even render the solutions regular
everywhere and at the origin in particular. These are then solitons or re
gular black holes. We will comment on the generality of the solutions at h
and and several other properties.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/5/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Ruben Manvelyan (Yerevan Physics Institute)
DTSTART:20240313T100000Z
DTEND:20240313T110000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/7
DESCRIPTION:Title: On Correlation Functions for Conformal Higher Spin Currents in
d dimension\nby Ruben Manvelyan (Yerevan Physics Institute) as part of
AUTH HEP-TH Seminars\n\nLecture held in Theory Seminar Room (4th Floor).\
n\nAbstract\nWe revisit the problem of classification and explicit constru
ction of the conformal three-point correlation functions of currents of ar
bitrary integer spin in arbitrary dimensions.\nFor the conserved currents\
, we set up the equations for the conservation conditions and solve them c
ompletely for some values of spins\, confirming the earlier counting of th
e number of independent structures matching them with the higher-spin cubi
c vertices in one higher dimension. We discuss the general solution for th
e correlators of conserved currents and delegate to a follow-up work.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/7/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Theodoros Horikis (University of Ioannina)
DTSTART:20240410T090000Z
DTEND:20240410T100000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/8
DESCRIPTION:Title: Dark soliton propagation under perturbations\nby Theodoros
Horikis (University of Ioannina) as part of AUTH HEP-TH Seminars\n\nLectur
e held in Theory Seminar Room (4th Floor).\n\nAbstract\nDark solitons of t
he defocusing nonlinear Schrodinger (NLS) equation will be considered. Aft
er a short introduction to the main concepts\, we will present a direct pe
rturbation method for approximating dark solitons of the NLS equation unde
r the influence of perturbations. It is found that these solitons under th
e influence of perturbations develop a shelf that propagates with speed de
termined by the background intensity. The dynamical properties of the soli
ton and the shelf are obtained from integral relations arising from the co
nservation laws of the NLS equation. To reveal the importance of these she
lves\, we study the generation and dynamics of dark solitons in various sy
stems\, and make possible connections of the perturbed NLS with other impo
rtant equations that exhibit shelves.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/8/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Xavier Bekaert (University of Tours)
DTSTART:20240605T090000Z
DTEND:20240605T100000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/9
DESCRIPTION:Title: Holographic realisation of Carrollian conformal scalars\nby
Xavier Bekaert (University of Tours) as part of AUTH HEP-TH Seminars\n\n\
nAbstract\nThe singleton is a remarkable unitary representation of the con
formal algebra\, which was first investigated by Dirac in the sixties\, an
d whose bulk/boundary description in the seventies by Flato and Fronsdal i
s sometimes considered as a precursor of the AdS/CFT correspondence. The f
lat limit of the singleton on AdS spacetime is shown to provide the bulk d
ual\, in Minkowski spacetime\, of the Carrollian conformal scalar field li
ving at null infinity.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/9/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Anatoly Dymarsky (University of Kentucky)
DTSTART:20240529T140000Z
DTEND:20240529T150000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/10
DESCRIPTION:Title: Krylov complexity and chaos\nby Anatoly Dymarsky (Universi
ty of Kentucky) as part of AUTH HEP-TH Seminars\n\n\nAbstract\nI will revi
ew recent attempts to understand if dynamics in Krylov space (including Kr
ylov complexity) is a proper probe of quantum chaos. The talk will include
a number of new results evaluating asymptotic value of Krylov complexity
and\, time permitting\, discuss temperature dependence of physics in Krylo
v space.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/10/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Alessandro Georgoudis (Queen Mary University of London)
DTSTART:20240522T090000Z
DTEND:20240522T100000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/11
DESCRIPTION:Title: The O(N) Monolith reloaded: Sum rules and Form Factor Bootstra
p\nby Alessandro Georgoudis (Queen Mary University of London) as part
of AUTH HEP-TH Seminars\n\n\nAbstract\nIn this talk I will present the S-m
atrix bootstrap program and its application to the study of 2d gapped and
UV complete QFTs. In our work we extend the known results from pure S-matr
ix bootstrap by including into the set-up form factors and spectral functi
ons of the stress energy tensor and conserved currents. I will explain how
this extended set-up works and show how the associated sum rules allows u
s to put bounds on quantities like the central charge of the underlying co
nformal theories in the UV. In this context I will show how from our resul
ts a big portion of the boundary of the space of allowed theories can only
flow from CFTs with infinite central charges. I will track this result do
wn to a particular behaviour of the amplitudes in physical kinematics and
discuss its physical implications. Based on arxiv:hep-th/2311.03031 in col
laboration with L. Córdova\, M. Correia and A. Vuignier.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/11/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Georgios Karananas (Ludwig-Maximilians-Universität München)
DTSTART:20241106T100000Z
DTEND:20241106T110000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/13
DESCRIPTION:Title: The particle content of (scalar-curvature)^2 gravities\nby
Georgios Karananas (Ludwig-Maximilians-Universität München) as part of
AUTH HEP-TH Seminars\n\n\nAbstract\nI will show that studying the spectrum
of (scalar-curvature)^2 gravities on Minkowski background inevitably resu
lts into a Catch-22: any consistent interpretation of the particle dynamic
s dictates that no accidental gauge symmetries emerge\, a requirement that
cannot be fulfilled on Minkowski. Such emergent symmetries are artifacts
of the linearized approximation on top of flat background\, suggesting tha
t the analysis of the spectrum on flat background is hindered by strong co
upling effects. Such undesirable symmetries are absent already at the lead
ing nontrivial order in perturbations on non-flat backgrounds\, e.g. de Si
tter spacetime\, which are the appropriate ones for studying the particle
dynamics of R^2 gravities.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/13/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sven F. Stawinski (Universität Bonn)
DTSTART:20240925T090000Z
DTEND:20240925T100000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/14
DESCRIPTION:Title: Recursive Structure of Conformal Four-Point Integrals\nby
Sven F. Stawinski (Universität Bonn) as part of AUTH HEP-TH Seminars\n\n\
nAbstract\nWe consider conformal four-point integrals to investigate how m
uch of their mathematical structure in two spacetime dimensions carries ov
er to higher dimensions. In particular\, we discuss recursions in the loop
order and spacetime dimension. This results e.g. in new expressions for c
onformal ladder integrals with generic propagator powers in all even dimen
sions and allows us to lift results on 2d fishnet integrals with underlyin
g Calabi-Yau geometry to higher dimensions. Moreover\, we demonstrate that
the Basso-Dixon generalizations of these integrals obey different variant
s of the Toda equations of motion\, thus establishing a connection to clas
sical integrability and the family of so-called tau-functions. We then sho
w that all of these integrals can be written in a double copy form that co
mbines holomorphic and anti-holomorphic building blocks. Here integrals in
higher dimensions are constructed from an intersection pairing of two-dim
ensional "periods'' together with their derivatives.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/14/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Pierre Vanhove (Université Paris-Saclay)
DTSTART:20250129T100000Z
DTEND:20250129T110000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/15
DESCRIPTION:Title: From scattering amplitudes to gravitational waves observables<
/a>\nby Pierre Vanhove (Université Paris-Saclay) as part of AUTH HEP-TH S
eminars\n\n\nAbstract\nThe necessity for high precision analytic computati
ons of gravitational waves emitted from the gravitational two-body scatter
ing in Einstein gravity has driven the development of scattering amplitude
s techniques for classical gravitational observables. This approach has yi
elded analytic results that are in impressive agreement with those obtaine
d from numerical general relativity.\n\nIn this presentation\, we will elu
cidate the noteworthy correlation between the perturbative quantum scatter
ing methodology and the classical post-Minkowskian expansion. This framewo
rk offers a coherent framework for comprehending gravitational radiation.
Additionally\, it provides a natural embedding of Einstein gravity into an
effective field theory framework.\n\nWe will present a novel cubic formul
ation of gravity and demonstrate how this facilitates the computation of g
ravitational observables to all orders in perturbation.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/15/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Elli Pomoni (DESY\, Hamburg)
DTSTART:20250305T100000Z
DTEND:20250305T110000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/16
DESCRIPTION:Title: Exploring thermal CFTs\nby Elli Pomoni (DESY\, Hamburg) as
part of AUTH HEP-TH Seminars\n\n\nAbstract\nIn this talk\, I will present
recent developments in the study of Conformal Field Theories (CFTs) at fi
nite temperature. The motivation of this work is different applications to
holography\, black holes in AdS as well as interesting statistical physic
s systems. After a short overview to the usual (zero Temperature) conforma
l bootstrap approach to CFTs\, I will discuss how the dynamics at finite t
emperature are constrained by the Kubo-Martin-Schwinger (KMS) condition. I
will present explicit sum rules for one-point functions\, providing a bas
is for setting up a numerical bootstrap problem\, the power of which I wil
l demonstrate with specific examples. Furthermore\, the KMS condition can
be used to extract the leading behavior of one-point functions for heavy o
perators analytically. Lastly\, I will show how to generalize this framewo
rk to temporal line-defects akin to Polyakov loops in gauge theories.\n\nT
he talk will be based on 2306.12417\, 2312.13030\, 2407.14600 and 2411.009
78\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/16/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Mohsen Alishahiha (IPM\, Tehran)
DTSTART:20250219T100000Z
DTEND:20250219T110000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/17
DESCRIPTION:Title: Quantum chaos and Krylov complexity\nby Mohsen Alishahiha
(IPM\, Tehran) as part of AUTH HEP-TH Seminars\n\n\nAbstract\nWe demonstra
te\,\nthrough analytical computations\, that in finite many-body systems\,
while ramp and plateau are\ntwo generic features of Krylov complexity\, t
he manner in which complexity saturates reveals the\nchaotic nature of the
system. In particular\, we show that the dynamics towards saturation prec
isely\ndistinguish between chaotic and integrable systems.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/17/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Matthieu Vilatte (University of Mons)
DTSTART:20250123T130000Z
DTEND:20250123T160000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/18
DESCRIPTION:Title: Asymptotically flat gravity and the emergence of Carrollian ph
ysics\nby Matthieu Vilatte (University of Mons) as part of AUTH HEP-TH
Seminars\n\nLecture held in Theory Seminar Room (4th Floor).\n\nAbstract\
nIn this lecture we will study gravity in spacetimes that go back to Minko
wski at infinity i.e. asymptotically flat spacetimes. This framework allow
s to study the gravitationnal field infinitely far away from an isolated s
ource. Detailing the simple example of Minkoswski itself will reveal the e
xistence of three types of infinities: timelike\, spacelike and null. The
last one being the locus where gravitationnal radiation can be captured\,
we will spend some time detailing its rigourous construction using the pro
cedure of conformal compactification à la Penrose. Along the way we will
discover that symmetries\, namely (conformal) Carrollian symmetries\, are
at work at null infinity. Then\, going in the so-called Bondi coordinates\
, we shall show the relation between (conformal) Carroll symmetries and th
e symmetries near infinity of asymptotically flat spacetimes\, the BMS gro
up. If time allows\, we will finally explain how one can use these coordin
ates to prove the existence of gravitationnal waves in the non-linear regi
me of general relativity.\n\nLiterature:\n\n“The seminal papers”\n- A.
Ashtekar\, Geometry and physics at null infinity\, 1409.1800 [gr-qc]\n\n-
H. Bondi et al’\, Gravitational waves in general relativity. 7. Waves f
rom axisymmetric isolated systems\, Proc.Roy.Soc.Lond.A 269 (1962) 21-52\n
\n- R.K. Sachs\, Gravitational waves in general relativity. 8. Waves in as
ymptotically flat space-times\, Proc.Roy.Soc.Lond.A 270 (1962) 103-126\n\n
- R. Penrose\, Conformal treatment of infinity\, Gen.Rel.Grav. 43 (2011) 9
01-922 (reprint)\, originally from 1962\n\n“Modern approaches” \n\n- R
. Ruzziconi\, Asymptotic symmetries and the gauge fixing approach to the B
MS group\, PoS Modave2019 (2020) 003\n\n- A Fiorucci\, Leaky covariant pha
se spaces and application to Lambda-BMS symmetry\, PhD Thesis\, Chapter 2.
\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/18/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Niels Obers (Niels Bohr Institute)
DTSTART:20250312T100000Z
DTEND:20250312T110000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/19
DESCRIPTION:Title: A BPS Road to Holography: Decoupling Limits and Non-Lorentzian
Geometries [Cancelled]\nby Niels Obers (Niels Bohr Institute) as part
of AUTH HEP-TH Seminars\n\n\nAbstract\nI explore decoupling limits that l
ead to matrix theories on D-branes\, focusing on their BPS nature and the
emergence of non-Lorentzian target space geometries. In these limits\, D-b
ranes experience instantaneous gravitational forces\, and when applied to
curved geometries\, it is shown that a single decoupling limit leads to th
e AdS/CFT correspondence. By applying two such limits\, we generate new ho
lographic examples\, including those with non-Lorentzian bulk geometries.
I also discuss the relationship between matrix theories and non-relativis
tic string theory\, and their uplift to M-theory. Finally\, we demonstrate
that reversing these decoupling limits connects to the TTbar deformation
in two dimensions. This provides a new perspective on the near-horizon bra
ne geometry and leads to TTbar-like flow equations for the Dp-brane DBI ac
tion.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/19/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Fedor K. Popov (University of Stony Brook)
DTSTART:20250226T150000Z
DTEND:20250226T160000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/20
DESCRIPTION:Title: Temperature-Resistent Order in 2+1 dimensions\nby Fedor K.
Popov (University of Stony Brook) as part of AUTH HEP-TH Seminars\n\n\nAb
stract\nHigh temperatures are typically thought to increase disorder. Here
we examine this idea in Quantum Field Theory in 2+1 dimensions. For this
sake we explore a novel class of tractable models\, consisting of nearly-m
ean-field scalars interacting with critical scalars. We identify UV-comple
te\, local\, unitary models in this class and show that symmetry breaking
Z2→∅ occurs at any temperature in some regions of the phase diag
ram. This phenomenon\, previously observed in models with fractional dimen
sions\, or in the strict planar limits\, or with non-local interactions\,
is now exhibited in a local\, unitary 2+1 dimensional model with a finite
number of fields.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/20/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Justin R. David\, (Indian Institute of Science\, Bangalore)
DTSTART:20250212T090000Z
DTEND:20250212T100000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/21
DESCRIPTION:Title: The large N vector model on a sphere and at finite temperatur
e\nby Justin R. David\, (Indian Institute of Science\, Bangalore) as p
art of AUTH HEP-TH Seminars\n\n\nAbstract\nThe $O(N)$ vector model with a
quartic interaction in 3 dimensions \n is an one of the most well studi
ed quantum field theories. It is important to describe strongly correlated
physics and its non-trivial fixed point at large $N$ serves as the holog
raphic dual to Vasiliev's higher spin theory on $AdS_3$. In spite of the
extensive studies\, there is no systematic study of the model on $S^1\\ti
mes S^2$. We develop a method to evaluate the partition function and ener
gy density of a massive scalar on a 2-sphere of radius $r$ and at finite t
emperature $\\beta$ as power series in $\\beta/r$. Each term in the power
series can be written in terms of polylogarithms. We use this result to ob
tain the gap equation for the large $N$\, critical O(N) in the large rad
ius expansion.\nSolving the gap equation perturbatively we obtain the lead
ing finite size corrections to thermal one point functions in the model. \
nThis includes one point functions of the higher spin\, $s>2$ currents of
the \nmodel for which we use the Euclidean inversion formula. \nThe talk
will begin with a brief introduction to the relevance of finite temperatur
e \nphysics in holography.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/21/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Chris Hull (Imperial College\, London)
DTSTART:20250409T090000Z
DTEND:20250409T100000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/23
DESCRIPTION:Title: Monopoles\, Dirac Strings and Generalised Symmetries\nby C
hris Hull (Imperial College\, London) as part of AUTH HEP-TH Seminars\n\n\
nAbstract\nDirac’s quantum theory of magnetic monopoles requires a Dira
c string attached to each monopole\, and it is important that the fields e
quations do not depend on the positions of the Dirac strings\, provided th
at they comply with the Dirac veto: they must not intersect the worldlines
s of electrically charged particles. This theory is revisited and it is sh
own that it has generalised symmetries related to the freedom of moving th
e Dirac strings. The Dirac veto is interpreted as an anomaly and \nthe pos
sibility of cancelling the anomaly by embedding in a higher-dimensional th
eory will be discussed.\n\nThis talk is based on arXiv:2411.18741\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/23/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Manthos Karydas (LBL\, Berkeley)
DTSTART:20250402T090000Z
DTEND:20250402T100000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/24
DESCRIPTION:Title: On the quantum mechanics of entropic forces\nby Manthos Ka
rydas (LBL\, Berkeley) as part of AUTH HEP-TH Seminars\n\nLecture held in
Theory Seminar Room (4th Floor).\n\nAbstract\nIt has been conjectured that
the gravitational interaction may arise as an entropic force rather than
as a result of virtual quanta exchange of a fundamental field. In this tal
k I will present a set of microscopic quantum models which realize this id
ea in detail. I will describe a simple mechanism by which Newton’s law o
f gravity arises from the extremization of the free energy of a collection
of qubits. I will show both a local and non-local model version of the co
nstruction and discuss how to distinguish these entropic models from ordin
ary perturbative quantum gravity using existing observations and near term
experiments. Based on 2502.17575 with Daniel Carney\, Thilo Scharnhorst\,
Roshni Singh and Jacob M. Taylor.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/24/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Marco Meineri (University of Turino)
DTSTART:20250430T090000Z
DTEND:20250430T100000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/25
DESCRIPTION:Title: No-go theorems for higher-spin charges in AdS_2\nby Marco
Meineri (University of Turino) as part of AUTH HEP-TH Seminars\n\n\nAbstra
ct\nHigher-spin conserved currents and charges feature prominently in inte
grable 2d QFTs in flat space. Motivated by the question of integrable fiel
d theories in Anti de-Sitter space\, we consider the consequences of highe
r-spin currents for QFTs in AdS2\, and find that their effect is much more
constraining than in flat space. Specifically\, it is impossible to prese
rve: (a) any higher-spin charges when deforming a massive free field by in
teractions\, or (b) any spin-4 charges when deforming a CFT by a Virasoro
primary. Along the way\, we explain how higher-spin charges lead to intege
r spacing in the spectrum of primaries and to constraints on correlation f
unctions. We also comment on consequences for critical long-range statisti
cal models.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/25/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Niels Obers (Niels Bohr Institute)
DTSTART:20250514T090000Z
DTEND:20250514T100000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/26
DESCRIPTION:Title: A BPS Road to Holography: Decoupling Limits and Non-Lorentzian
Geometries\nby Niels Obers (Niels Bohr Institute) as part of AUTH HEP
-TH Seminars\n\nAbstract: TBA\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/26/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Achilleas Porfyriadis (University of Crete)
DTSTART:20250611T090000Z
DTEND:20250611T100000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/27
DESCRIPTION:Title: Accidental symmetries near extreme black hole horizons\nby
Achilleas Porfyriadis (University of Crete) as part of AUTH HEP-TH Semina
rs\n\nLecture held in Theory Seminar Room (4th Floor).\n\nAbstract\nNear t
he horizon of extremal black holes the linear Einstein equations acquire a
n accidental symmetry. This symmetry is a linearized diffeomorphism which
acts on the perturbative solutions around the background near-horizon spac
etime and maps them amongst themselves. It is accidental in the sense that
it enlarges the set of such transformations to make it strictly larger th
an the background's isometries. Accidental symmetries combine neatly with
the near-horizon SL(2) isometries inside a Virasoro algebra and can be tho
ught of as on-shell large diffeomorphisms/asymptotic symmetries of AdS2.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/27/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Pantelis Panopoulos (APCTP\, Pohang)
DTSTART:20250604T090000Z
DTEND:20250604T100000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/28
DESCRIPTION:Title: Wess Zumino action and Casimir energy of N=1 Superconformal Fi
eld Theories\nby Pantelis Panopoulos (APCTP\, Pohang) as part of AUTH
HEP-TH Seminars\n\n\nAbstract\nIn this talk I will start with an introduc
tion to anomalies using the unified framework of gauged symmetries. Next
I will be focusing on Superconformal anomalies as an application. In the m
ain core of the talk I will first define the Casimir energy of Superconfor
mal Field Theories (SCFTs) through the supersymmetry algebra and how it re
ceives contributions from anomalies. Next by giving a general introduction
to Wess-Zumino (WZ) anomaly action\, some simple examples of growing comp
lication will be presented\, concluding with the WZ-action of N=1 SCFTs a
s our main aim. Discrepancy of our Casimir energy with the rest of bibliog
raphy\, its relation to the Wess-Zumino action evaluated at different sc
hemes and how WZ-action contributes towards the resolution of this mismat
ch will be emphasized.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/28/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Maurizzio Firrotta (University of Crete)
DTSTART:20250826T090000Z
DTEND:20250826T100000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/29
DESCRIPTION:Title: The light after the string: Absorption and Emission from HES s
tates\nby Maurizzio Firrotta (University of Crete) as part of AUTH HEP
-TH Seminars\n\nLecture held in Theory Seminar Room (4th Floor).\n\nAbstra
ct\nI will present a recent extension of the Veneziano and Shapiro-Virasor
o amplitudes to the case of arbitrarily excited strings (AES) in critical
bosonic string theory. I will also discuss several novel applications\, su
ch as the absorption universality emerging from the absorption cross secti
on of AES and the emission rate of AES with particular focus on the photon
and graviton emission spectrum. Finally I will comment on the spin multip
ole expansion and the classical infinite spin limit of three-point Heavy-L
ight-Heavy string amplitudes where the heavy states belong to both leading
and sub-leading Regge trajectories.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/29/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sokratis Trifinopoulos (CERN)
DTSTART:20251022T090000Z
DTEND:20251022T100000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/30
DESCRIPTION:Title: Properties of Fundamental Particles from Quantum Information?<
/a>\nby Sokratis Trifinopoulos (CERN) as part of AUTH HEP-TH Seminars\n\nL
ecture held in Meeting room of the Department of Physics (4th floor\, room
26).\n\nAbstract\nScattering processes provide a natural arena to explore
how quantum information concepts manifest in particle physics. Beginning
with low-energy nucleon–nucleon scattering\, I show how characteristic e
ntanglement patterns are tied to emergent symmetries\n such as the Wigner
SU(4) symmetry. Turning to gauge and gravitational interactions\, gluon an
d graviton scattering (and their supersymmetric counterparts) exhibit maxi
mal entanglement at perpendicular kinematics\, while magic remains below i
ts maximal theoretical\n value. However\, it is noteworthy that there exis
t an anticorrelation between magic production and the spin of the particip
ating particles. Finally\, a surprising link emerges when studying entangl
ement in electroweak 2→2 processes at π/2 scattering angles:\n the amou
nt of entanglement is minimized when the Cabibbo–Kobayashi–Maskawa (CK
M) matrix is nearly (but not exactly) diagonal\, in qualitative agreement
with observation. Extending this reasoning to the lepton sector\, the same
principle favors a Pontecorvo–Maki–Nakagawa–Sakata\n (PMNS) matrix
with two large angles and a smaller one\, again consistent with data\, tog
ether with a possible indication of suppressed CP violation. These recurri
ng patterns suggest that information-theoretic measures may provide a new
perspective on the structure\n of fundamental interactions.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/30/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Enrico Marchetto (DESY)
DTSTART:20251126T100000Z
DTEND:20251126T110000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/31
DESCRIPTION:Title: Analytic tools for thermal holographic correlators (and not on
ly)\nby Enrico Marchetto (DESY) as part of AUTH HEP-TH Seminars\n\n\nA
bstract\nFinite-temperature systems have always played a central role in p
hysics. In recent years\, the study of conformal field theories in a therm
al state has gained momentum\, with applications ranging from condensed ma
tter to black holes through the AdS/CFT correspondence. In this talk\, I w
ill introduce a general analytic bootstrap framework for thermal two-point
functions\, explaining how to decompose them in terms of generalized free
field correlators. I will then apply this framework to holographic CFTs a
t leading order in large N\, focusing in particular on thermal scalar two-
point functions. I will address the specific challenges arising from consi
dering scalars with integer dimensions\, and I will show how these tools a
re able to produce a prediction that is not only consistent with previous
studies of scalars with half-integer dimensions\, but also in agreement wi
th the numerical solution of the wavefunction in the bulk.\n\nThis talk is
based on the works hep-th/2506.06422 and hep-th/2510.20894.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/31/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Luca Ciambelli (Perimeter Institute)
DTSTART:20251030T150000Z
DTEND:20251030T160000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/32
DESCRIPTION:Title: Radiation\, Holography\, and Quantum Null Physics\nby Luca
Ciambelli (Perimeter Institute) as part of AUTH HEP-TH Seminars\n\n\nAbst
ract\nThis seminar is divided into two parts. The first explores gravitati
onal radiation in spacetimes with a cosmological constant. For negative va
lues\, we relate it to the fluid/gravity correspondence and to dissipative
processes in the dual boundary fluid. By then taking the flat limit using
classic techniques developed together with the Thessaloniki group\, we sh
ow how specific aspects of Carrollian boundary physics are sourced by bulk
radiation\, providing a first step toward understanding dissipative pheno
mena in Carrollian frameworks.\n\nThe second part\, connected to the first
through the physics of null hypersurfaces\, turns to quantum physics and
the recently developed framework of quantum null geometry. I will describe
the canonical quantization of gravity on null hypersurfaces\, offering a
potential resolution to the problem of time in QG. Finally\, I will connec
t this to recent bottom-up approaches to defining the entropy of generic s
ubregions in QG and to the study of quantum area fluctuations. This involv
es the use of geometric modular flows to implement the crossed-product con
struction in semiclassical gravity\, the generalization of entanglement we
dges beyond AdS/CFT\, and connections to QG tabletop experiments probing q
uantum fluctuations of the area of a causal diamond.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/32/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Adrien Fiorucci (Ecole Polytechnique)
DTSTART:20251015T090000Z
DTEND:20251015T100000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/33
DESCRIPTION:Title: Holographic Derivation of BMS Flux-Balance Laws\nby Adrien
Fiorucci (Ecole Polytechnique) as part of AUTH HEP-TH Seminars\n\n\nAbstr
act\nThe main challenges in formulating a holographic correspondence for a
symp-\ntotically flat spacetimes stem from the null nature of the conforma
l boundary\nand the non-conservation of gravitational charges in the prese
nce of bulk ra-\ndiation. In this talk\, I will present the systematic and
mathematically robust\napproach to understanding and deriving the associa
ted flux-balance laws\nfrom geometric principles defined intrinsically at
the boundary.\n\nI will begin by reviewing key aspects of the geometry at
null infinity\, known\nas conformal Carroll geometry. I will highlight tha
t the boundary affine con-\nnections contain degrees of freedom that natur
ally act as sources encoding\nradiation in a holographic framework. I will
then derive flux-balance laws\nfor an effective field theory formulated a
t the boundary\, using novel tech-\nniques that introduce “hypermomenta
” as the responses to fluctuations in\nthe boundary connection. These eq
uations reproduce the celebrated BMS\nflux-balance laws in a convenient bo
undary gauge.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/33/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Romain Ruzziconi (Harvard University)
DTSTART:20251119T170000Z
DTEND:20251119T180000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/34
DESCRIPTION:Title: Flat Space/Carrollian Limit of AdS/CFT\nby Romain Ruzzicon
i (Harvard University) as part of AUTH HEP-TH Seminars\n\n\nAbstract\nCarr
ollian holography provides a framework for flat space holography\, proposi
ng that gravity in four-dimensional asymptotically flat spacetime is dual
to a Carrollian CFT in three dimensions living at null infinity. In this t
alk\, I will present this framework and explain how massless scattering am
plitudes in flat space can be re-expressed as Carrollian CFT correlators a
t the boundary\, referred to as Carrollian amplitudes. I will then show th
at these correlators naturally arise from the Carrollian limit of holograp
hic CFT correlators computed via AdS Witten diagrams\, establishing a corr
espondence between the flat space limit in the bulk and the Carrollian lim
it at the boundary. This paves the way towards deriving flat space hologra
phy from the flat space/Carrollian limit of the AdS/CFT correspondence.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/34/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Gerben Oling (University of Edinburgh)
DTSTART:20260121T090000Z
DTEND:20260121T100000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/35
DESCRIPTION:Title: A boundary energy-momentum tensor from gravity near null infin
ity\nby Gerben Oling (University of Edinburgh) as part of AUTH HEP-TH
Seminars\n\n\nAbstract\nI will discuss how solving the Einstein equations
in a radial expansion around null infinity in terms of arbitrary boundary
metric data can be used to derive a boundary energy-momentum tensor whose
diffeomorphism Ward identities generalize the usual Bondi loss equations.
Generalizing holography from AdS/CFT to spacetimes with vanishing cosmolog
ical constant has been a long-standing goal. The limit of vanishing AdS cu
rvature radius can be interpreted as an ultra-local or Carrollian limit on
the boundary\, which is related to the (conformal) Carrollian structure a
t null infinity. However\, a straightforward application of such Carrollia
n limits to standard Lorentzian field theories often gives clearly unsatis
factory results. Motivated by this\, we can turn to the bulk for hints on
how such putative dual Carroll theories should be more appropriately const
ructed. In this talk\, I will describe some of the recent work on extracti
ng an energy-momentum-news complex from the dynamics of Einstein gravity n
ear asymptotic null infinity in three and four bulk dimensions. In analogy
with standard holographic renormalization in AdS/CFT\, this is achieved b
y radially solving the Einstein equations near null infinity for general b
oundary data and introducing appropriate counterterms for the resulting on
-shell action\, and variations then define currents and their correspondin
g Ward identities.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/35/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dimitrios Zoakos (University of Patras)
DTSTART:20251203T100000Z
DTEND:20251203T110000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/36
DESCRIPTION:Title: Holography and a codimension-2 defect CFT\nby Dimitrios Zo
akos (University of Patras) as part of AUTH HEP-TH Seminars\n\n\nAbstract\
nIn this talk I will present a new holographic duality between a non-super
symmetric defect conformal field theory & its gravity dual. On the gravity
side\, the defect is realized by a D5 probe brane that wraps an S^2 subse
t of the S^5 and carries k units of flux through the S^2. The brane ends o
n an R^(1\,1) subspace of the AdS5 boundary resulting to a codimension-2 d
efect. On the field theory side\, the defect is described by a classical s
olution whose precise form we determine. We calculate the one-point functi
ons of the energy-momentum tensor and of the chiral primary operators\, bo
th at strong and at weak coupling and in an appropriate limit we find comp
elling agreement between the two results.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/36/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Vasileios Letsios (University of Mons)
DTSTART:20251210T100000Z
DTEND:20251210T110000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/37
DESCRIPTION:Title: Features of Gravitini and Supersymmetry on de Sitter spacetime
- [Cancelled]\nby Vasileios Letsios (University of Mons) as part of A
UTH HEP-TH Seminars\n\nLecture held in Theory Seminar Room (4th Floor).\n\
nAbstract\nIt is commonly believed that a unitary supersymmetric quantum f
ield theory (QFT) involving graviton and gravitino fields on fixed 4-dimen
sional de Sitter spacetime (dS4) cannot exist due to known challenges asso
ciated with supersymmetry (SUSY) on spaces with positive cosmological cons
tant. In this talk\, we contradict this expectation by presenting a new un
itary supersymmetric QFT on dS4 background: the free supersymmetric theor
y of the chiral graviton and chiral gravitino fields. The theory overcomes
the known obstacles to unitary global SUSY on de Sitter because the commu
tator between two SUSY transformations closes on the conformal algebra so
(4\,2) rather than the de Sitter algebra so(4\,1). Crucially\, the \nso(4
\,2) symmetry is realised through unconventional conformal-like transforma
tions. Along the way\, we will discuss curious features of the free gravi
tino QFT on dS4: canonical quantisation with the use of a real action fun
ctional forces the field to be chiral\, if one insists on the positivity o
f the norm in the QFT Fock space. As a complementary approach\, we will co
mpute the Euclidean 1-loop path integral of the gravitino on Euclidean dS
4\, and show that group-theoretic characters associated with the UIRs of
so(4\,1) appear. This indicates that the tension between chirality and uni
tarity seems to be absent in the Euclidean picture.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/37/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sašo Grozdanov (University of Edinburgh)
DTSTART:20260218T100000Z
DTEND:20260218T110000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/39
DESCRIPTION:Title: Spectra of black hole perturbations and the spectral duality r
elation\nby Sašo Grozdanov (University of Edinburgh) as part of AUTH
HEP-TH Seminars\n\n\nAbstract\nPerturbations of black holes generate fluct
uations in spacetime known as gravitational waves. In an (approximately) a
symptotically flat universe\, the spectra of damped gravitational waves (t
he quasinormal modes) in the two channels of black hole perturbations (lon
gitudinal and transverse) are related by the so-called isospectrality prop
erty. In this talk\, I will present a new universal spectral duality relat
ion that connects the quasinormal mode spectra in spacetimes with a negati
ve cosmological constant. Through the AdS/CFT correspondence\, this gravit
ational relation implies a series of nontrivial constraints on the spectra
of QFTs exhibiting S-duality (or particle–vortex duality)\, as well as
on conformal field theories with double-trace deformations. As part of my
talk\, I will also discuss a few other properties of such thermal QFT spec
tra\, and how their analytic reconstruction can be understood\, within the
language of the AdS/CFT correspondence\, through the phenomenon of pole-s
kipping.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/39/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sahand Seifnashri (Institute of Advanced Studies)
DTSTART:20260128T140000Z
DTEND:20260128T150000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/40
DESCRIPTION:Title: Exactly Solvable 1+1d Chiral Lattice Gauge Theories\nby Sa
hand Seifnashri (Institute of Advanced Studies) as part of AUTH HEP-TH Sem
inars\n\n\nAbstract\nUsing the modified Villain lattice Hamiltonian formul
ation of the 1+1d compact boson theory\, we construct exactly solvable abe
lian chiral lattice gauge theories in two spacetime dimensions. As a concr
ete example\, we derive an explicit quadratic lattice Hamiltonian for the
"34-50" chiral gauge theory. We further show that N copies of the modified
Villain theory realize the full T-duality transformations\, which we then
use to solve and analyze these lattice gauge theories.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/40/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Themistocles Zikopoulos (Perimeter Institute)
DTSTART:20260108T113000Z
DTEND:20260108T123000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/41
DESCRIPTION:Title: Conformal boundaries in gravity\nby Themistocles Zikopoulo
s (Perimeter Institute) as part of AUTH HEP-TH Seminars\n\nLecture held in
Theory Seminar Room (4th Floor).\n\nAbstract\nWe discuss aspects of black
holes\, confined within a timeline boundary endowed with conformal bounda
ry conditions — whereby the conformal class of the boundary metric is he
ld fixed. In Euclidean signature\, the gravitational action of such soluti
ons precisely coincides with the thermal effective action of a conformal f
ield theory in one less dimension\, for all values of the cosmological con
stant. In Lorentzian signature\, the Weyl factor of the boundary metric ex
hibits rich dynamics. Our discussion concerns general Lovelock gravity the
ories in arbitrary dimension. Based on joint work with D. Galante and R. M
yers.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/41/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Simone Giombi (Princeton University)
DTSTART:20260311T150000Z
DTEND:20260311T160000Z
DTSTAMP:20260424T221953Z
UID:AUTH-HEP-TH/42
DESCRIPTION:Title: Loops in AdS and the Wilson-Fisher BCFT\nby Simone Giombi
(Princeton University) as part of AUTH HEP-TH Seminars\n\n\nAbstract\nA co
nformal field theory in the presence of a boundary (BCFT) can be mapped by
a conformal transformation to the equivalent problem of studying the CFT
in anti de Sitter (AdS) space. I will use this approach to analyze the Wil
son-Fisher fixed point of the O(N) model with a boundary. In particular\,
I will discuss the calculation of the free energy of the CFT in AdS space
using the epsilon expansion\, and use it to extract predictions for the bo
undary central charge and other observables of the BCFT in three dimension
s.\n
LOCATION:https://stable.researchseminars.org/talk/AUTH-HEP-TH/42/
END:VEVENT
END:VCALENDAR