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SUMMARY: Far-from-equilibrium transport in many-body quantum systems - Ben
 jamin Doyon
DTSTART:20150422T131500Z
DTEND:20150422T141500Z
UID:TALK57969@talks.cam.ac.uk
CONTACT:Mahdi Godazgar
DESCRIPTION:In comparison to the well-established subject of equilibrium t
 hermodynamics\, physics out of equilibrium is much less understood. The fi
 eld is vast\, but a family of states that have the potential for a powerfu
 l theoretical description is that of non-equilibrium steady states. These 
 do not change macroscopically with time\, but support steady flows\, be it
  of charges\, particles\, or energy. They naturally generalize equilibrium
  thermodynamic states\, and can be truly far from equilibrium\, with entro
 py production. There has been a lot of progress in their study within clas
 sical dynamics\, and more recently quantum dynamics. In many-body quantum 
 systems this is especially interesting because of the nontrivial interplay
  between non-equilibrium physics and many-body behaviours\, such as those 
 captured by quantum field theory or those associated to integrability. I w
 ill describe some of the main ideas\, focussing on exact results for far-f
 rom-equilibrium ballistic transport especially at or near criticality. As 
 I will explain\, a variety of fundamental aspects of many-body physics tur
 n out to play important roles: the Lieb-Robinson bound for the velocity of
  propagation of information\, chiral factorization in one dimension\, (gen
 eralized) local Gibbs thermalization and the eigenstate thermalization hyp
 othesis\, shock waves and fluid dynamics\, and gauge-gravity duality. This
  is based on works done in collaborations with Denis Bernard\, Marianne Ho
 ogeveen\, and Joe Bhaseen\, Andrew Lucas and Koenraad Schalm.
LOCATION:MR2\, Centre for Mathematical Sciences
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