BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//wp-events-plugin.com//6.4.7.2//EN
TZID:Europe/Paris
X-WR-TIMEZONE:Europe/Paris
BEGIN:VEVENT
UID:0-641@lptms.universite-paris-saclay.fr
DTSTART:20190122T110000Z
DTEND:20190122T120000Z
DTSTAMP:20190115T115007Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lptm
 s-gatien-verley/
SUMMARY:Séminaire du LPTMS: Gatien Verley - LPTMS\, salle 201\, 2ème éta
 ge\, Bât 100\, Campus d'Orsay - 22 Jan 19 11:00
DESCRIPTION:Non-equilibrium conductance -- Assembly of energy converter\nGa
 tien Verley (LPT\, Bât. 210\, Université Paris-Sud)\nStochastic thermody
 namic is the appropriated theory to study small non-equilibrium systems mo
 deled by Markov processes. These systems are driven by several heat reserv
 oirs (or work sources) and are crossed by strong energy currents. In this 
 framework and for stationary Markov jump processes\, I will introduce the 
 concept of non-equilibrium conductance matrix that connects energy current
 s and thermodynamic forces\, as Onsager matrices do for close-to-equilibri
 um systems. I will discuss the Thermodynamic Uncertainty Relations (TUR) t
 hat generalizes far from equilibrium the fluctuations-dissipation theorem.
  A central result is that current covariances are bounded from below by th
 e conductance matrix (Loewner partial order). In the close to equilibrium 
 limit\, this TUR saturates restoring the fluctuations-dissipation theorem.
 \nNon-equilibrium conductance matrices are also convenient to study energy
  converters and power efficiency trade-off. In the second part\, I will de
 scribe an energy converter made of many small interacting elementary machi
 nes. This energy converter has many original features that I found inspiri
 ng for understanding the physics of non-equilibrium systems :\n- emergent 
 strong coupling in the mean-field treatment (as evidenced by the non-equil
 ibrium conductance matrix)\,\n- collective enhancement of efficiency and p
 ower\,\n- dynamical phase transition and emergent ergodicity breaking (non
 -convex large deviation functions for currents)\n- non-typical efficiency 
 fluctuations
CATEGORIES:seminars
LOCATION:LPTMS\, salle 201\, 2ème étage\, Bât 100\, Campus d'Orsay\, 15 
 Rue Georges Clemenceau\, Orsay\, 91405\, France
GEO:48.698185;2.181768
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=15 Rue Georges Clemenceau\,
  Orsay\, 91405\, France;X-APPLE-RADIUS=100;X-TITLE=LPTMS\, salle 201\, 2è
 me étage\, Bât 100\, Campus d'Orsay:geo:48.698185,2.181768
END:VEVENT
END:VCALENDAR