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SUMMARY:Quantum reaction-diffusion dynamics -  Gabriele Perfetto\, Eberhar
 d-Karls-Universität Tübingen
DTSTART:20231117T110000Z
DTEND:20231117T120000Z
UID:TALK207955@talks.cam.ac.uk
CONTACT:Gaurav
DESCRIPTION:The talk will be about the recent formulation and the study of
  quantum reaction-diffusion dynamics. In the classical formulation of the 
 reaction diffusion dynamics\, particles undergo diffusion and react upon m
 eeting according to different possible reaction rules. In the talk\, I wil
 l then\npresent the formulation of quantum reaction-diffusion dynamics by 
 considering the quantum nonequilibrium dynamics of systems where fermionic
  particles coherently hop on a one-dimensional lattice and are subject to 
 dissipative processes analogous to those of classical reaction diffusion m
 odels.\n\nRemarkably\, the quantum reaction-diffusion dynamics can be anal
 ytically solved in the so-called reaction-limited regime by exploiting the
  time dependent generalized Gibbs ensemble method. Here\, spatial density 
 fluctuations are quickly smoothed out due to fast hopping\, which for clas
 sical systems is described by a mean-field approach. I demonstrate that\ni
 n the quantum case this is not the case and collective behavior beyond mea
 n-field can manifest both at stationarity\, when an absorbing-state phase 
 transition takes place\, and during the relaxation dynamics. I will also d
 iscuss ongoing progresses in the formulation and the derivation of these r
 esults concerning quantum reaction-diffusion dynamics via Keldysh field-th
 eory techniques.\n\nRefs.:\n[1] G. Perfetto\, F. Carollo\, J. P. Garrahan\
 , I. Lesanovsky.\n Phys. Rev. Lett. 130\, 210402 (2023).\n[2] G. Perfetto\
 , F. Carollo\, J. P. Garrahan\, I. Lesanovsky.\n arXiv:2305.06944 (2023) (
 to appear in Phys. Rev. E).\n[3] F. Gerbino\, I. Lesanovsky\, G. Perfetto.
  arXiv:2307.14945 (2023).\n+ work in progress...
LOCATION:TCM Seminar Room
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