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Out-of-equilibrium phenomena and Transport in Cold Atoms

Thierry Giamarchi

Bulletin of the American Physical SocietyMar 14, 20160 citations

Observation of a persistent non-equilibrium state in cold atoms

Daniel Lobser, Andrew E. S. Barentine, Eric Cornell +1 more

arXiv:1509.00366Nature PhysicsOct 5, 201551 citations

Cold atoms in the degenerated quantum regime: turbulence and systems out-of-equilibrium

Vanderlei Salvador Bagnato

Jan 1, 20190 citations

Quantum thermalization and equilibrium state with multiple temperatures

Quntao Zhuang, Biao Wu

A large class of isolated quantum systems in a pure state can equilibrate and serve as a heat bath. We show that, once equilibrium is reached, any of its subsystems, which are much smaller than the isolated system, can be thermalized such that the subsystem is governed by the Gibbs distribution. Within this theoretical framework, the celebrated superposition principle of quantum mechanics leads to a prediction of a thermalized subsystem with multiple temperatures when the isolated system is in a superposition state of energy eigenstates of multiple distinct energy scales. This multiple-temperature state is at equilibrium, completely different from a non-equilibrium state that has multiple temperatures at different parts. Feasible experimental schemes, in particular with ultra-cold atoms, to verify this prediction are discussed.A large class of isolated quantum systems in a pure state can equilibrate and serve as a heat bath. We show that, once equilibrium is reached, any of its subsystems, which are much smaller than the isolated system, can be thermalized such that the subsystem is governed by the Gibbs distribution. Within this theoretical framework, the celebrated superposition principle of quantum mechanics leads to a prediction of a thermalized subsystem with multiple temperatures when the isolated system is in a superposition state of energy eigenstates of multiple distinct energy scales. This multiple-temperature state is at equilibrium, completely different from a non-equilibrium state that has multiple temperatures at different parts. Feasible experimental schemes, in particular with ultra-cold atoms, to verify this prediction are discussed.

arXiv:1211.2956Laser Physics LettersJun 10, 20147 citations

Long-range interactions in cold atomic systems: A foreword

Giovanna Morigi, Alessandro Campa, Andrea Giansanti +2 more

AIP conference proceedingsJan 1, 20082 citations

Surface–atom force out of thermal equilibrium and its effect on ultra-cold atoms

Mauro Antezza

The surface–atom Casimir–Polder–Lifshitz force out of thermal equilibrium is investigated in the framework of macroscopic electrodynamics. Particular attention is devoted to its large distance limit that shows a new, stronger behaviour with respect to the equilibrium case. The frequency shift produced by the surface–atom force on the centre-of-mass oscillations of a harmonically trapped Bose–Einstein condensate and on the Bloch oscillations of an ultra-cold fermionic gas in an optical lattice are discussed for configurations out of thermal equilibrium.The surface–atom Casimir–Polder–Lifshitz force out of thermal equilibrium is investigated in the framework of macroscopic electrodynamics. Particular attention is devoted to its large distance limit that shows a new, stronger behaviour with respect to the equilibrium case. The frequency shift produced by the surface–atom force on the centre-of-mass oscillations of a harmonically trapped Bose–Einstein condensate and on the Bloch oscillations of an ultra-cold fermionic gas in an optical lattice are discussed for configurations out of thermal equilibrium.

arXiv:cond-mat/0511341Journal of Physics A Mathematical and GeneralMay 10, 200663 citations

A large-N expansion based theoretical framework for modeling cold atoms in and out of equilibrium

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