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Casimir forces on deformed fermionic chains

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dc.contributor.authorMula, Begoña
dc.contributor.authorSantalla, Silvia N.
dc.contributor.authorRodríguez Laguna, Javier
dc.date.accessioned2024-05-20T11:28:17Z
dc.date.available2024-05-20T11:28:17Z
dc.date.issued2021-01-20
dc.description.abstractWe characterize the Casimir forces for the Dirac vacuum on free-fermionic chains with smoothly varying hopping amplitudes, which correspond to ( 1 + 1 )-dimensional [( 1 + 1 )D] curved spacetimes with a static metric in the continuum limit. The first-order energy potential for an obstacle on that lattice corresponds to the Newtonian potential associated with the metric, while the finite-size corrections are described by a curved extension of the conformal field theory predictions, including a suitable boundary term. We show that for weak deformations of the Minkowski metric, Casimir forces measured by a local observer at the boundary are universal. We provide numerical evidence for our results on a variety of (1+1)D deformations: Minkowski, Rindler, anti–de Sitter (the so-called rainbow system), and sinusoidal metrics. Moreover, we show that interactions do not preclude our conclusions, exemplifying this with the deformed Heisenberg chain.en
dc.description.versionversión publicada
dc.identifier.doihttp://doi.org/10.1103/PhysRevResearch.3.013062
dc.identifier.issn2643-1564
dc.identifier.urihttps://hdl.handle.net/20.500.14468/12057
dc.journal.titlePHYSICAL REVIEW RESEARCH
dc.journal.volume3
dc.language.isoen
dc.publisherAmerican Physical Society
dc.relation.centerFacultad de Ciencias
dc.relation.departmentFísica Fundamental
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.es
dc.titleCasimir forces on deformed fermionic chainses
dc.typejournal articleen
dc.typeartículoes
dspace.entity.typePublication
relation.isAuthorOfPublicationf24eca7b-6fab-4a61-b10e-eb2f58e6342b
relation.isAuthorOfPublication.latestForDiscoveryf24eca7b-6fab-4a61-b10e-eb2f58e6342b
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