RT Journal Article
T1 Physical swap dynamics, shortcuts to relaxation, and entropy production in dissipative Rydberg gases
A1 Gutiérrez Díez, Ricardo
A1 Garrahan, Juan P.
A1 Lesanovsky, Igor
AB Dense Rydberg gases are out-of-equilibrium systems where strong density-density interactions give rise to effective kinetic constraints. They cause dynamic arrest associated with highly constrained many-body configurations, leading to slow relaxation and glassy behavior. Multicomponent Rydberg gases feature additional long-range interactions such as excitation exchange. These are analogous to particle swaps used to artificially accelerate relaxation in simulations of atomistic models of classical glass formers. In Rydberg gases, however, swaps are real physical processes, which provide dynamical shortcuts to relaxation. They permit the accelerated approach to stationarity in experiment and at the same time have an impact on the nonequilibrium stationary state. In particular, their interplay with radiative decay processes amplifies irreversibility of the dynamics, an effect which we quantify via the entropy production at stationarity. Our work highlights an intriguing analogy between real dynamical processes in Rydberg gases and artificial dynamics underlying advanced Monte Carlo methods. Moreover, it delivers a quantitative characterization of the dramatic effect swaps have on the structure and dynamics of their stationary state.
PB APS
SN 1539-3755
YR 2019
FD 2019-07-10
LK https://hdl.handle.net/10016/31916
UL https://hdl.handle.net/10016/31916
LA eng
NO We  are  grateful  to  M.  Marcuzzi  and  P.  Rotondo  for  in-sightful discussions. The research leading to these results hasreceived funding from the European Research Council underthe European Union’s Seventh Framework Programme (GrantNo. FP/2007-2013)/ERC Grant Agreement No. 335266 (ES-CQUMA) and the EPSRC Grants No. EP/M014266/1, No.EP/R04421X/1,  and  No.  EP/R04340X/1.  R.G.  acknowl-edges the funding received from the European Union’s Horizon 2020 research and innovation programme under the MarieSklodowska-Curie Grant Agreement No. 703683. I.L. grate-fully acknowledges funding through the Royal Society Wolf-son  Research  Merit  Award.  We  are  also  grateful  for  accessto  the  University  of  Nottingham  High  Performance  Com-puting Facility, and for the computing resources and relatedtechnical  support  provided  by  CRESCO/ENEAGRID  HighPerformance  Computing  infrastructure  (funded  by  ENEA,the  Italian  National  Agency  for  New  Technologies,  Energyand  Sustainable  Economic  Development  and  by  Italian  andEuropean research programmes) and its staff.
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