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The entanglement entropy of one-dimensional gases

Calabrese, Pasquale and Mintchev, Mihail and Vicari, Ettore (2011) The entanglement entropy of one-dimensional gases. Physical review letters, 107 . 020601. ISSN 0031-9007

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We introduce a systematic framework to calculate the bipartite entanglement entropy of a spatial subsystem in a one-dimensional quantum gas which can be mapped into a noninteracting fermion system. To show the wide range of applicability of the proposed formalism, we use it for the calculation of the entanglement in the eigenstates of periodic systems, in a gas confined by boundaries or external potentials, in junctions of quantum wires and in a time-dependent parabolic potential.

Item Type: Article
Additional Information: Imported from arXiv
Subjects: Area02 - Scienze fisiche > FIS/02 - Fisica teorica, modelli e metodi matematici
Divisions: Dipartimenti (until 2012) > DIPARTIMENTO DI FISICA " E. FERMI"
Depositing User: dott.ssa Sandra Faita
Date Deposited: 09 Apr 2015 16:12
Last Modified: 09 Apr 2015 16:12
URI: http://eprints.adm.unipi.it/id/eprint/1860

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