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SUMMARY:Chemical potentials in driven steady-state systems in contact: A l
 arge deviation approach - Jules Guioth\, DAMTP
DTSTART:20181127T130000Z
DTEND:20181127T140000Z
UID:TALK111325@talks.cam.ac.uk
CONTACT:Etienne Fodor
DESCRIPTION:Bringing two or several systems in contact is an ubiquitous si
 tuation in Thermodynamics. In particular\, when systems exchange conserve 
 quantities such as energy\, volumes or particles\, the equilibrium station
 ary state is described by an equalisation of temperatures\, pressures or c
 hemical potentials\; the difference of these quantities being interpreted 
 as thermodynamic forces. But when going out-of-equilibrium\, the existence
  of such intensive parameters associated with conserved quantities (like m
 ass or volume) remains an open issue. \n\nDuring this talk\, I will presen
 t on simple but generic stochastic out-of-equilibrium systems in weak cont
 act the existence of a thermodynamic potential (at the thermodynamic limit
 \, using large deviation analysis) associated with the number of particles
  in each sub-systems in contact\, from which\, under certain assumptions\,
  a notion of chemical potential can be derived. These chemical potentials 
 nevertheless reveal a strong dependence on the contact dynamics\, and ther
 efore do not generally obey any equation of state\, unlike equilibrium (bu
 t like pressure in active particles systems). Several examples ranging fro
 m lattice gases to independent self-propelled particles will illustrate th
 e influence of the contact features. 
LOCATION:MR11\, CMS
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