Prethermalization and glassiness in the bosonic Hubbard model

We investigate the nonequilibrium dynamics of the bosonic Hubbard model starting from inhomogeneous superfluid or Mott insulator initial states using the truncated Wigner approximation (TWA). We find that the relaxation of the system develops in two steps for sufficiently large interaction strengths...

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Detalles Bibliográficos
Autores principales:	Salazar Landea, Ignacio, Nessi, Emilio Nicolás
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2015
Materias:	Física Hubbard model Physics Mott insulator Phase transition Quantum dynamics Superfluidity Relaxation (physics) Semiclassical physics Quantum mechanics Non-equilibrium thermodynamics
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/125805
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-125805
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Física Hubbard model Physics Mott insulator Phase transition Quantum dynamics Superfluidity Relaxation (physics) Semiclassical physics Quantum mechanics Non-equilibrium thermodynamics
spellingShingle	Física Hubbard model Physics Mott insulator Phase transition Quantum dynamics Superfluidity Relaxation (physics) Semiclassical physics Quantum mechanics Non-equilibrium thermodynamics Salazar Landea, Ignacio Nessi, Emilio Nicolás Prethermalization and glassiness in the bosonic Hubbard model
topic_facet	Física Hubbard model Physics Mott insulator Phase transition Quantum dynamics Superfluidity Relaxation (physics) Semiclassical physics Quantum mechanics Non-equilibrium thermodynamics
description	We investigate the nonequilibrium dynamics of the bosonic Hubbard model starting from inhomogeneous superfluid or Mott insulator initial states using the truncated Wigner approximation (TWA). We find that the relaxation of the system develops in two steps for sufficiently large interaction strengths: after a fast relaxation the system gets caught in metastable prethermalized states that precede the true equilibrium state. We find that the lifetime of these prethermalized states increases by several orders of magnitude as we increase the on-site interaction strength beyond a threshold value. We show that the emergence of long-lived metastable states in the quantum dynamics is associated with an ergodic (active) to nonergodic (inactive) dynamical phase transition in the ensemble of classical trajectories that contribute to the semiclassical limit. This dynamical phase transition, which is very similar to that found in different classical models of glasses, is closely related to the dynamic heterogeneity of the classical relaxation.
format	Articulo Articulo
author	Salazar Landea, Ignacio Nessi, Emilio Nicolás
author_facet	Salazar Landea, Ignacio Nessi, Emilio Nicolás
author_sort	Salazar Landea, Ignacio
title	Prethermalization and glassiness in the bosonic Hubbard model
title_short	Prethermalization and glassiness in the bosonic Hubbard model
title_full	Prethermalization and glassiness in the bosonic Hubbard model
title_fullStr	Prethermalization and glassiness in the bosonic Hubbard model
title_full_unstemmed	Prethermalization and glassiness in the bosonic Hubbard model
title_sort	prethermalization and glassiness in the bosonic hubbard model
publishDate	2015
url	http://sedici.unlp.edu.ar/handle/10915/125805
work_keys_str_mv	AT salazarlandeaignacio prethermalizationandglassinessinthebosonichubbardmodel AT nessiemilionicolas prethermalizationandglassinessinthebosonichubbardmodel
bdutipo_str	Repositorios
_version_	1764820452264378369

Prethermalization and glassiness in the bosonic Hubbard model

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