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Titre: Impact of trans-Planckian excitations on black-hole radiation in dipolar condensates
Auteur(s): Ribeiro, Caio Cesar Holanda
Fischer, Uwe R.
metadata.dc.identifier.orcid: https://orcid.org/0000-0002-9874-9639
metadata.dc.contributor.affiliation: Seoul National University, Department of Physics and Astronomy, Center for Theoretical Physics
University of Brasilia, Institute of Physics
Seoul National University, Department of Physics and Astronomy, Center for Theoretical Physics
Assunto:: Condensados ​​de Bose-Einstein
Buracos negros (Astronomia)
Date de publication: 21-jui-2023
Editeur: American Physical Society
Référence bibliographique: RIBEIRO, Caio C. Holanda; FISCHER, Uwe R. Impact of trans-Planckian excitations on black-hole radiation in dipolar condensates. Physical Review D, [S. l.], v. 107, L121502, 2023. DOI: https://doi.org/10.1103/PhysRevD.107.L121502.
Abstract: We consider a quasi-one-dimensional dipolar condensate in a steplike analog black hole setup. It is shown that the existence of roton excitations leaves significant imprints onto the Hawking radiation spectrum. The emitted radiation depends on the depth of the roton minimum, and is in general more intense. In addition, we find a novel spontaneous particle creation mechanism with no counterpart in nondipolar condensates. Our results establish that dipolar condensates offer a richer and more versatile environment for the simulation of particle production from the quantum vacuum in the presence of horizon interfaces than contact-interaction condensates.
metadata.dc.description.unidade: Instituto de Física (IF)
DOI: https://doi.org/10.1103/PhysRevD.107.L121502
metadata.dc.relation.publisherversion: https://journals.aps.org/prd/abstract/10.1103/PhysRevD.107.L121502
Collection(s) :Artigos publicados em periódicos e afins

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