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Thomas Pohl

Driven-dissipative many-body systems with mixed power-law interactions: Bistabilities and temperature-driven nonequilibrium phase transitions

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  • N. Sibalic, Durham University
  • ,
  • C. G. Wade, Durham University
  • ,
  • C. S. Adams, Durham University
  • ,
  • K. J. Weatherill, Durham University
  • ,
  • T. Pohl

We investigate the nonequilibrium dynamics of a driven-dissipative spin ensemble with competing power-law interactions. We demonstrate that dynamical phase transitions as well as bistabilities can emerge for asymptotic van derWaals interactions, but critically rely on the presence of a slower decaying potential core. Upon introducing random particle motion, we show that a finite gas temperature can drive a phase transition with regards to the spin degree of freedom and eventually leads to mean-field behavior in the high-temperature limit. Our work reconciles contrasting observations of recent experiments with Rydberg atoms in the cold-gas and hot-vapor domain, and introduces an efficient theoretical framework in the latter regime.

Original languageEnglish
Article number011401
JournalPhysical Review A
Volume94
Issue1
Number of pages6
ISSN2469-9926
DOIs
Publication statusPublished - 14 Jul 2016
Externally publishedYes

    Research areas

  • BLACKBODY RADIATION, ATOMS, Non-equilibrium, SPINS, RYDBERG ATOMS

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