Ergotropy and entanglement in critical spin chains

Mula, Begoña, Fernández, Eva M., Alvarellos, José E., Fernández, Julio J., García-Aldea, David, Santalla, Silvia N. y Rodríguez-Laguna, Javier . (2023) Ergotropy and entanglement in critical spin chains. PHYSICAL REVIEW B 107, 075116 (2023)

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Título Ergotropy and entanglement in critical spin chains
Autor(es) Mula, Begoña
Fernández, Eva M.
Alvarellos, José E.
Fernández, Julio J.
García-Aldea, David
Santalla, Silvia N.
Rodríguez-Laguna, Javier
Materia(s) Física
Abstract A subsystem of an entangled ground state (GS) is in a mixed state. Thus, if we isolate this subsystem from its surroundings, we may be able to extract work applying unitary transformations, up to a maximal amount which is called ergotropy. Once this work has been extracted, the subsystem will still contain some bound energy above its local GS, which can provide valuable information about the entanglement structure. We show that the bound energy for half a free fermionic chain decays as the square of the entanglement entropy divided by the chain length, thus approaching zero for large system sizes, and we conjecture that this relation holds for all one-dimensional critical states.
Editor(es) American Physical Society
Fecha 2023-02-08
Identificador bibliuned:DptoFF-FCIE-Articulos-Jealvarellos-0001
bibliuned:DptoFF-FCIE-Articulos-Jealvarellos-0001
DOI - identifier 10.1103/PhysRevB.107.075116
Nombre de la revista PHYSICAL REVIEW B
Número de Volumen 107
Publicado en la Revista PHYSICAL REVIEW B 107, 075116 (2023)
Idioma eng
Versión de la publicación publishedVersion
Tipo de recurso Article
Derechos de acceso y licencia info:eu-repo/semantics/openAccess
Tipo de acceso Acceso abierto
Notas adicionales The registered version of this article, first published in PHYSICAL REVIEW B , is available online at the publisher's website: American Physical Society, https://doi.org/10.1103/PhysRevB.107.075116

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Creado: Wed, 31 Jan 2024, 20:22:33 CET