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Out-of-equilibrium dynamics in many-body quantum systems

Laurent Sanchez-Palencia

Aug 1, 20140 citations

Studying non-equilibrium many-body dynamics using one-dimensional Bose gases

Tim Langen, Michael Gring, Maximilian Kuhnert +7 more

Non-equilibrium dynamics of isolated quantum many-body systems play an important role in many areas of physics. However, a general answer to the question of how these systems relax is still lacking. We experimentally study the dynamics of ultracold one-dimensional (1D) Bose gases. This reveals the existence of a quasi-steady prethermalized state which differs significantly from the thermal equilibrium of the system. Our results demonstrate that the dynamics of non-equilibrium quantum many-body systems is a far richer process than has been assumed in the past.Non-equilibrium dynamics of isolated quantum many-body systems play an important role in many areas of physics. However, a general answer to the question of how these systems relax is still lacking. We experimentally study the dynamics of ultracold one-dimensional (1D) Bose gases. This reveals the existence of a quasi-steady prethermalized state which differs significantly from the thermal equilibrium of the system. Our results demonstrate that the dynamics of non-equilibrium quantum many-body systems is a far richer process than has been assumed in the past.

AIP conference proceedingsJan 1, 20146 citations

Non-equilibrium Quantum Many-Body Dynamics: Functional Integral Approaches

Cédric Bodet, Matthias Kronenwett, Boris Nowak +2 more

We discuss functional-integral approaches to far-from-equilibrium quantum many-body dynamics. Specific techniques considered include the two-particle-irreducible effective action and the real-time flow-equation approach. Different applications, including equilibration after a sudden parameter change and non-equilibrium critical phenomena, illustrate the potential of these methods.

arXiv:1101.0397Jan 2, 20111 citation

Many-Body Quantum Systems at Equilibrium

Simone Montangero

Springer eBooksJan 1, 20180 citations

Out-of-Equilibrium Quantum Dynamics

Yuto Ashida

Springer thesesJan 1, 20200 citations

Nonequilibrium quantum dynamics and transport: from integrability to many-body localization

Romain Vasseur, Joel E. Moore

Abstract We review the non-equilibrium dynamics of many-body quantum systems after a quantum quench with spatial inhomogeneities, either in the Hamiltonian or in the initial state. We focus on integrable and many-body localized systems that fail to self-thermalize in isolation and for which the standard hydrodynamical picture breaks down. The emphasis is on universal dynamics, non-equilibrium steady states and new dynamical phases of matter, and on phase transitions far from thermal equilibrium. We describe how the infinite number of conservation laws of integrable and many-body localized systems lead to complex non-equilibrium states beyond the traditional dogma of statistical mechanics.Abstract We review the non-equilibrium dynamics of many-body quantum systems after a quantum quench with spatial inhomogeneities, either in the Hamiltonian or in the initial state. We focus on integrable and many-body localized systems that fail to self-thermalize in isolation and for which the standard hydrodynamical picture breaks down. The emphasis is on universal dynamics, non-equilibrium steady states and new dynamical phases of matter, and on phase transitions far from thermal equilibrium. We describe how the infinite number of conservation laws of integrable and many-body localized systems lead to complex non-equilibrium states beyond the traditional dogma of statistical mechanics.

arXiv:1603.06618Journal of Statistical Mechanics Theory and ExperimentJun 1, 2016246 citations

Far-from-equilibrium quantum many-body dynamics

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