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SUMMARY:Tilman Plehn (Heidelberg University\, Germany)
DTSTART;VALUE=DATE-TIME:20210325T103000Z
DTEND;VALUE=DATE-TIME:20210325T113000Z
DTSTAMP;VALUE=DATE-TIME:20240328T213146Z
UID:IISc_CHEP_colloquium/1
DESCRIPTION:Title: Machine Learning for Particle Theory\nby Tilman Plehn (He
idelberg University\, Germany) as part of IISc CHEP colloquium\n\n\nAbstra
ct\nLHC physics is a unique field in the sense that we compare vast and hi
ghly complex data sets with precise first-principle predictions. I will st
art with a few examples\, where machine learning offers unique opportuniti
es all over LHC physics. With a focus on particle theory\, I will show how
generative neural networks can supplement standard simulation methods and
discuss their conceptional advantages. I will then explain how generative
adversarial and flow-based networks can invert detector simulations or QC
D parton showers in a\nmathematically consistent manner. Finally\, I will
illustrate how the same networks can infer the structure of QCD splittings
forming jets.\n
LOCATION:https://researchseminars.org/talk/IISc_CHEP_colloquium/1/
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SUMMARY:Andrew Tolley (Imperial College London)
DTSTART;VALUE=DATE-TIME:20210401T103000Z
DTEND;VALUE=DATE-TIME:20210401T113000Z
DTSTAMP;VALUE=DATE-TIME:20240328T213146Z
UID:IISc_CHEP_colloquium/2
DESCRIPTION:Title: Effective Field Theories and Positivity Bounds\nby Andrew
Tolley (Imperial College London) as part of IISc CHEP colloquium\n\n\nAbs
tract\nEffective field theories are the central tool of modern physics\, u
tilized in gravity\, cosmology\, particle physics and condensed matter. EF
Ts providing a framework in which low energy physics can be described larg
ely independently of the high energy completion\, which is one of the reas
ons they are so powerful. Despite this there has been a recent recognition
that high energy physics does limit the range of possible low energy effe
ctive theories. The sharpest of these restrictions are the constraints tha
t emerge from Lorentz invariance\, locality and unitarity in the form of `
positivity bounds'. I will review some recent progress related to the appl
ication of positivity bounds to EFTs\, and discuss implications for gravit
ational effective field theories\, interacting massive spin theories\, and
theories with soft scattering behaviour such as Galileons.\n
LOCATION:https://researchseminars.org/talk/IISc_CHEP_colloquium/2/
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