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SUMMARY:Tilman Plehn (Heidelberg University\, Germany)
DTSTART:20210325T103000Z
DTEND:20210325T113000Z
DTSTAMP:20260404T111415Z
UID:IISc_CHEP_colloquium/1
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/IISc_
 CHEP_colloquium/1/">Machine Learning for Particle Theory</a>\nby Tilman Pl
 ehn (Heidelberg University\, Germany) as part of IISc CHEP colloquium\n\n\
 nAbstract\nLHC physics is a unique field in the sense that we compare vast
  and highly complex data sets with precise first-principle predictions. I 
 will start with a few examples\, where machine learning offers unique oppo
 rtunities all over LHC physics. With a focus on particle theory\, I will s
 how how generative neural networks can supplement standard simulation meth
 ods and discuss their conceptional advantages. I will then explain how gen
 erative adversarial and flow-based networks can invert detector simulation
 s or QCD parton showers in a\nmathematically consistent manner. Finally\, 
 I will illustrate how the same networks can infer the structure of QCD spl
 ittings forming jets.\n
LOCATION:https://stable.researchseminars.org/talk/IISc_CHEP_colloquium/1/
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SUMMARY:Andrew Tolley (Imperial College London)
DTSTART:20210401T103000Z
DTEND:20210401T113000Z
DTSTAMP:20260404T111415Z
UID:IISc_CHEP_colloquium/2
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/IISc_
 CHEP_colloquium/2/">Effective Field Theories and Positivity Bounds</a>\nby
  Andrew Tolley (Imperial College London) as part of IISc CHEP colloquium\n
 \n\nAbstract\nEffective field theories are the central tool of modern phys
 ics\, utilized in gravity\, cosmology\, particle physics and condensed mat
 ter. EFTs providing a framework in which low energy physics can be describ
 ed largely independently of the high energy completion\, which is one of t
 he reasons they are so powerful. Despite this there has been a recent reco
 gnition that high energy physics does limit the range of possible low ener
 gy effective theories. The sharpest of these restrictions are the constrai
 nts that emerge from Lorentz invariance\, locality and unitarity in the fo
 rm of `positivity bounds'. I will review some recent progress related to t
 he application of positivity bounds to EFTs\, and discuss implications for
  gravitational effective field theories\, interacting massive spin theorie
 s\, and theories with soft scattering behaviour such as Galileons.\n
LOCATION:https://stable.researchseminars.org/talk/IISc_CHEP_colloquium/2/
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