Quantum quench dynamics of the Luttinger model

The dynamics of the Luttinger model after a quantum quench is studied. We compute in detail one- and two-point correlation functions for two types of quenches: from a noninteracting to an interacting Luttinger model and vice versa. In the former case, the noninteracting Fermi gas features in the mom...

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Detalles Bibliográficos
Autores principales:	Iucci, Carlos Aníbal, Cazalilla, Miguel A.
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2009
Materias:	Física Distribution (mathematics) Physics Critical exponent Canonical ensemble Normal mode Momentum Quantum mechanics Quantum Fermi gas Power law
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/126229
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-126229
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Física Distribution (mathematics) Physics Critical exponent Canonical ensemble Normal mode Momentum Quantum mechanics Quantum Fermi gas Power law
spellingShingle	Física Distribution (mathematics) Physics Critical exponent Canonical ensemble Normal mode Momentum Quantum mechanics Quantum Fermi gas Power law Iucci, Carlos Aníbal Cazalilla, Miguel A. Quantum quench dynamics of the Luttinger model
topic_facet	Física Distribution (mathematics) Physics Critical exponent Canonical ensemble Normal mode Momentum Quantum mechanics Quantum Fermi gas Power law
description	The dynamics of the Luttinger model after a quantum quench is studied. We compute in detail one- and two-point correlation functions for two types of quenches: from a noninteracting to an interacting Luttinger model and vice versa. In the former case, the noninteracting Fermi gas features in the momentum distribution and other correlation functions are destroyed as time evolves. In the infinite-time limit, equal-time correlations are power laws but the critical exponents are found to differ from their equilibrium values. In all cases, we find that these correlations are well described by a generalized Gibbs ensemble [M. Rigol, V. Dunjko, V. Yurovsky, and M. Olshanii, Phys. Rev. Lett. 98, 050405 (2007)], which assigns a momentum-dependent temperature to each eigenmode.
format	Articulo Articulo
author	Iucci, Carlos Aníbal Cazalilla, Miguel A.
author_facet	Iucci, Carlos Aníbal Cazalilla, Miguel A.
author_sort	Iucci, Carlos Aníbal
title	Quantum quench dynamics of the Luttinger model
title_short	Quantum quench dynamics of the Luttinger model
title_full	Quantum quench dynamics of the Luttinger model
title_fullStr	Quantum quench dynamics of the Luttinger model
title_full_unstemmed	Quantum quench dynamics of the Luttinger model
title_sort	quantum quench dynamics of the luttinger model
publishDate	2009
url	http://sedici.unlp.edu.ar/handle/10915/126229
work_keys_str_mv	AT iuccicarlosanibal quantumquenchdynamicsoftheluttingermodel AT cazalillamiguela quantumquenchdynamicsoftheluttingermodel
bdutipo_str	Repositorios
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Quantum quench dynamics of the Luttinger model

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