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UID:0-1101@lptms.universite-paris-saclay.fr
DTSTART;TZID=Europe/Paris:20260324T110000
DTEND;TZID=Europe/Paris:20260324T120000
DTSTAMP:20260316T101958Z
URL:https://www.lptms.universite-paris-saclay.fr/seminars/lptms-seminar-th
 ibault-bonnemain-lptm-cergy-pontoise/
SUMMARY:LPTMS Seminar: Thibault Bonnemain (LPTM\, Cergy-Pontoise) - Salle d
 es séminaires du FAST et du LPTMS\, bâtiment Pascal n°530 - 24 Mar 26 1
 1:00
DESCRIPTION:Introduction to soliton gas theory and generalised hydrodynamic
 s\nThibault Bonnemain (LPTM\, Cergy-Pontoise)\n&nbsp\;\n\nGeneralised Hydr
 odynamics (GHD) is a rather recent theory that provides a framework for st
 udying a wide family of many-body integrable and nearly integrable systems
  out of equilibrium. I will introduce the notion of soliton gas\, associat
 ed with the Korteweg-de Vries (KdV) equation among others\, and use it as 
 a paradigmatic example for the GHD of integrable\, classical field theorie
 s. In particular\, by way of a heuristic argument based on the analogy bet
 ween solitons and classical particles\, I will construct the thermodynamic
 s of the KdV soliton gas (free energy\, entropy\, static covariance...)\, 
 as well as the Euler-scale hydrodynamic equations describing the evolution
  of weakly inhomogeneous gases. The results thus produced agree with numer
 ical simulations\; moreover they are consistent with and supplement the mo
 re rigorous\, albeit less transparent\, construction pioneered by Gennady 
 El\, based on the so-called thermodynamic spectral limit of finite-gap sol
 utions.\n\n&nbsp\;
CATEGORIES:seminars
LOCATION:Salle des séminaires du FAST et du LPTMS\, bâtiment Pascal n°53
 0\, rue André Riviere\, Orsay\, 91405\, France
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=rue André Riviere\, Orsay\
 , 91405\, France;X-APPLE-RADIUS=100;X-TITLE=Salle des séminaires du FAST 
 et du LPTMS\, bâtiment Pascal n°530:geo:0,0
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