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BEGIN:VEVENT
SUMMARY:Christian Brennecke (University of Bonn)
DTSTART:20260310T130000Z
DTEND:20260310T150000Z
DTSTAMP:20260404T100116Z
UID:PSMQFT/1
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/PSMQF
 T/1/">On the Leading Order Term of the Lattice Yang-Mills Free Energy</a>\
 nby Christian Brennecke (University of Bonn) as part of Probability\, Stat
 istical Mechanics and Quantum Fields\n\nLecture held in 132\, via Bonomea 
 265\, SISSA\, Trieste.\n\nAbstract\nIn a recent paper\, S. Chatterjee dete
 rmined the leading order term of the free energy of U(N) lattice Yang-Mill
 s theory in $\\Lambda_n=\\{0\,\\ldots\,n\\}^d\\subset \\bZ^d$\, for every 
 $N\\geq 1$ and $d\\geq 2$. The formula is explicit apart from a contributi
 on $K_d$ which corresponds to the limiting free energy of lattice Maxwell 
 theory with boundary conditions induced by the axial gauge. After a brief 
 motivation\, I recall some of the key steps to obtain the leading order te
 rm of the free energy and I explain an equivalent characterization of $K_d
 $ that admits its explicit computation\, for every $d\\geq 2$.\n
LOCATION:https://stable.researchseminars.org/talk/PSMQFT/1/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Giorgio Cipolloni (University of Rome Tor Vergata)
DTSTART:20260324T130000Z
DTEND:20260324T150000Z
DTSTAMP:20260404T100116Z
UID:PSMQFT/2
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/PSMQF
 T/2/">A tale of large random matrices and logarithmically correlated field
 s (part 1)</a>\nby Giorgio Cipolloni (University of Rome Tor Vergata) as p
 art of Probability\, Statistical Mechanics and Quantum Fields\n\n\nAbstrac
 t\nWe will review recent results in random matrix theory\, with a focus on
  spectral properties of large non-Hermitian matrices with independent\, id
 entically distributed entries.\nWe will then discuss an intriguing connect
 ion of such matrices with the theory of logarithmically correlated fields 
 and with the fluctuations of their extremes.\n
LOCATION:https://stable.researchseminars.org/talk/PSMQFT/2/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Nikolay Barashkov (Max Planck Institute\, Leipzig)
DTSTART:20260519T120000Z
DTEND:20260519T140000Z
DTSTAMP:20260404T100116Z
UID:PSMQFT/3
DESCRIPTION:by Nikolay Barashkov (Max Planck Institute\, Leipzig) as part 
 of Probability\, Statistical Mechanics and Quantum Fields\n\nAbstract: TBA
 \n
LOCATION:https://stable.researchseminars.org/talk/PSMQFT/3/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Malin Forsstrom (Chalmers University of Technology)
DTSTART:20260512T120000Z
DTEND:20260512T140000Z
DTSTAMP:20260404T100116Z
UID:PSMQFT/4
DESCRIPTION:by Malin Forsstrom (Chalmers University of Technology) as part
  of Probability\, Statistical Mechanics and Quantum Fields\n\nAbstract: TB
 A\n
LOCATION:https://stable.researchseminars.org/talk/PSMQFT/4/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Lucas Broux (SISSA)
DTSTART:20260205T130000Z
DTEND:20260205T150000Z
DTSTAMP:20260404T100116Z
UID:PSMQFT/5
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/PSMQF
 T/5/">A geometric view upon the renormalisation of stochastic PDEs: the ex
 ample of $\\Phi^4$</a>\nby Lucas Broux (SISSA) as part of Probability\, St
 atistical Mechanics and Quantum Fields\n\nLecture held in 004 via Bonomea 
 265\, SISSA.\n\nAbstract\nIn this talk\, I wish to present some ideas conc
 erning the well-posedness of the $\\Phi^4$ equation\, which is a stochasti
 c partial differential equation (SPDE) with a cubic nonlinearity and pertu
 rbed by an additive random (and rough) noise. More precisely\, we are inte
 rested in the range of noises where this SPDE is singular (i.e. is classic
 ally ill-posed) but subcritical (i.e. the nonlinearity formally vanishes a
 t small scales). In this range\, even giving a meaning to the equation is 
 highly non-trivial and relies on an appropriate procedure of regularisatio
 n and renormalisation\, as was first understood by Da Prato and Debussche 
 (2003) and later widely generalised by several approaches including Hairer
 's theory of regularity structures (2014).\nI will\, on the one hand\, int
 roduce some of the important insights in the theory of singular SPDEs\, an
 d\, on the other hand\, present some more recent contributions. In particu
 lar\, I will be describing how taking a geometric viewpoint upon the solut
 ion manifold gives rise to a new perspective on what in the theory of regu
 larity structures is called a ``model'' for the equation. If time permits\
 , I will also briefly present a recently-developed ``intrinsic'' approach 
 for the actual solution theory\, yielding well-posedness of the equation g
 iven this model as input.\n(Based on joint works with Felix Otto\, Rhys St
 eele and Markus Tempelmayr).\n\nThe talk is in room 004 on ground floor of
  SISSA\, via Bonomean 265. Zoom access is also provided.\n
LOCATION:https://stable.researchseminars.org/talk/PSMQFT/5/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Leonardo Goller (SISSA)
DTSTART:20260219T100000Z
DTEND:20260219T120000Z
DTSTAMP:20260404T100116Z
UID:PSMQFT/6
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/PSMQF
 T/6/">Long Range Order in a Euclidean Gross-Neveu model on the lattice</a>
 \nby Leonardo Goller (SISSA) as part of Probability\, Statistical Mechanic
 s and Quantum Fields\n\n\nAbstract\nThe Gross–Neveu (GN) model is a quan
 tum field theory in $1+1$ dimensions describing $N$ massless Dirac fermion
 s interacting through an attractive four-fermion coupling. Introduced by G
 ross and Neveu \\cite{PhysRevD.10.3235} as a toy model for QCD\, it shares
  two of its key features: asymptotic freedom and dynamical mass generation
  via spontaneous breaking of a $\\mathbb{Z}_2$ chiral symmetry\, allowing 
 the fermion bilinear $(\\overline{\\psi}\\psi)(x)$ to acquire a non-zero e
 xpectation value.\n\nIn this talk\, we rigorously prove that a Euclidean l
 attice formulation of the Gross–Neveu model introduced by Cohen\, Elitzu
 r and Rabinovici exhibits long-range order in the $\\mathbb{Z}_2$-charged 
 fermion bilinear $\\overline{\\psi}\\psi$ for sufficiently large $N$ in tw
 o spacetime dimensions.\n\nThe proof relies on reflection positivity of th
 e bosonized measure obtained via a Hubbard–Stratonovich transformation o
 f the fermionic action and\, in particular\, on chessboard estimates in th
 e spirit of Fröhlich and Lieb (1978).\n\nJoint work with Simone Fabbri (S
 ISSA)\n
LOCATION:https://stable.researchseminars.org/talk/PSMQFT/6/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Michael Hofstetter (Weizmann Institute)
DTSTART:20260305T100000Z
DTEND:20260305T120000Z
DTSTAMP:20260404T100116Z
UID:PSMQFT/7
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/PSMQF
 T/7/">A stochastic control approach to Euclidean field theories with expon
 ential interaction</a>\nby Michael Hofstetter (Weizmann Institute) as part
  of Probability\, Statistical Mechanics and Quantum Fields\n\nLecture held
  in Room 136\, via Bonomea 265\, SISSA.\n\nAbstract\nIn this talk\, I demo
 nstrate how to obtain couplings of the Liouville field and the sinh-Gordon
  field with the Gaussian free field in dimension $d=2$\, such that the dif
 ference is in a Sobolev space of regularity $\\alpha>1$. The analysis cove
 rs the entire $L^2$ phase. The main tool is the variational approach to Eu
 clidean field theories by Barashkov and Gubinelli applied to field theorie
 s with exponential interaction. The additional key ingredients are estimat
 es for the short scales of the minimizer of the variational problem and se
 veral applications of the Brascamp-Lieb inequality.\n
LOCATION:https://stable.researchseminars.org/talk/PSMQFT/7/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Simone Fabbri (SISSA)
DTSTART:20260317T130000Z
DTEND:20260317T150000Z
DTSTAMP:20260404T100116Z
UID:PSMQFT/8
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/PSMQF
 T/8/">Non-perturbative renormalization for lattice massive QED2: the ultra
 violet problem</a>\nby Simone Fabbri (SISSA) as part of Probability\, Stat
 istical Mechanics and Quantum Fields\n\n\nAbstract\nI will consider a latt
 ice regularization of the massive QED in 2d\, describing a Dirac fermion i
 nteracting with a massive vector field\, in the regime in which the fermio
 n mass is much smaller than the boson mass and the latter is much smaller 
 than the ultraviolet cut-off\, which is the suitable one to mimic a realis
 tic 4d massive gauge theory like the Electroweak sector. The presence of t
 he lattice and of non-zero fermion mass breaks any solvability property. I
  will show that the effective action obtained after the integration of the
  ultraviolet degrees of freedom is expressed by expansions which are conve
 rgent for values of the coupling (electric charge) independent on the ferm
 ion mass and the ultraviolet cut-off\, and with cut-off-independent bare p
 arameters. By combining this result with the analysis of the infrared part
  in previous papers we get a complete construction of the model and a numb
 er of properties whose analogous are expected to hold in 4d. As I will dis
 cuss\, the choice of lattice rather than momentum regularization\, essenti
 al for ensuring Ward Identities\, requires the development of new methods 
 to get the necessary non-perturbative bounds. \nBased on a recent joint wo
 rk with V. Mastropietro (Roma La Sapienza) and B. Renzi (SISSA).\n
LOCATION:https://stable.researchseminars.org/talk/PSMQFT/8/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Marcello Dalmonte (ICTP)
DTSTART:20260505T120000Z
DTEND:20260505T140000Z
DTSTAMP:20260404T100116Z
UID:PSMQFT/9
DESCRIPTION:by Marcello Dalmonte (ICTP) as part of Probability\, Statistic
 al Mechanics and Quantum Fields\n\nAbstract: TBA\n
LOCATION:https://stable.researchseminars.org/talk/PSMQFT/9/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Giorgio Cipolloni (University of Rome Tor Vergata)
DTSTART:20260326T130000Z
DTEND:20260326T150000Z
DTSTAMP:20260404T100116Z
UID:PSMQFT/10
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/PSMQF
 T/10/">A tale of large random matrices and logarithmically correlated fiel
 ds (part 2)</a>\nby Giorgio Cipolloni (University of Rome Tor Vergata) as 
 part of Probability\, Statistical Mechanics and Quantum Fields\n\n\nAbstra
 ct\nWe will review recent results in random matrix theory\, with a focus o
 n spectral properties of large non-Hermitian matrices with independent\, i
 dentically distributed entries.\nWe will then discuss an intriguing connec
 tion of such matrices with the theory of logarithmically correlated fields
  and with the fluctuations of their extremes.\n
LOCATION:https://stable.researchseminars.org/talk/PSMQFT/10/
END:VEVENT
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