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SUMMARY:Matthew Walters (EPF Lausanne)
DTSTART:20210617T143000Z
DTEND:20210617T153000Z
DTSTAMP:20260423T010004Z
UID:HEPTUW/26
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/HEPTUW/26/">
 Thermalization and Hydrodynamics in 2d QFTs</a>\nby Matthew Walters (EPF L
 ausanne) as part of HEP seminars TU Wien (Vienna)\n\n\nAbstract\nI will di
 scuss the finite-temperature behavior of general 2d QFTs (obtained as rele
 vant deformations of CFTs). At long timescales (t >> 1/T)\, these theories
  all have an effective hydrodynamic description governed by the KPZ univer
 sality class. Using KPZ universality and causality\, I will derive a lower
  bound on the timescale characterizing the onset of this hydrodynamic beha
 vior. The resulting bound is typically much longer than the expected quant
 um equilibration time of 1/T. I will also show how causality can be used t
 o define a new thermodynamic C-function for 2d QFTs\, as well as constrain
  the sign of the "T-Tbar" term in EFTs.\n
LOCATION:https://researchseminars.org/talk/HEPTUW/26/
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