Comment on "how the huge energy of quantum vacuum gravitates to drive the slow accelerating expansion of the Universe"

Autores
Mazzitelli, Francisco Diego; Trombetta, Leonardo Giuliano
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In a recent paper [Q. Wang, Z. Zhu, and W. G. Unruh, Phys. Rev. D 95, 103504 (2017)PRVDAQ2470-001010.1103/PhysRevD.95.103504] it was argued that, due to the fluctuations around its mean value, vacuum energy gravitates differently from what was previously assumed. As a consequence, the Universe would accelerate with a small Hubble expansion rate, solving the cosmological constant and dark energy problems. We point out here that the results depend on the type of cutoff used to evaluate the vacuum energy. In particular, they are not valid when one uses a covariant cutoff such that the zero-point energy density is positive definite.
Fil: Mazzitelli, Francisco Diego. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Trombetta, Leonardo Giuliano. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Materia
Cosmological Constant
Universe
Dark energy
Quantum gravity
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/99055
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Comment on "how the huge energy of quantum vacuum gravitates to drive the slow accelerating expansion of the Universe"Mazzitelli, Francisco DiegoTrombetta, Leonardo GiulianoCosmological ConstantUniverseDark energyQuantum gravityhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1In a recent paper [Q. Wang, Z. Zhu, and W. G. Unruh, Phys. Rev. D 95, 103504 (2017)PRVDAQ2470-001010.1103/PhysRevD.95.103504] it was argued that, due to the fluctuations around its mean value, vacuum energy gravitates differently from what was previously assumed. As a consequence, the Universe would accelerate with a small Hubble expansion rate, solving the cosmological constant and dark energy problems. We point out here that the results depend on the type of cutoff used to evaluate the vacuum energy. In particular, they are not valid when one uses a covariant cutoff such that the zero-point energy density is positive definite.Fil: Mazzitelli, Francisco Diego. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Trombetta, Leonardo Giuliano. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; ArgentinaAmerican Physical Society2018-03-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/99055Mazzitelli, Francisco Diego; Trombetta, Leonardo Giuliano; Comment on "how the huge energy of quantum vacuum gravitates to drive the slow accelerating expansion of the Universe"; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; 97; 6; 15-3-2018; 1-22470-0029CONICET DigitalCONICETenghttps://doi.org/10.1103/PhysRevD.95.103504info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prd/abstract/10.1103/PhysRevD.97.068301info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.97.068301info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1801.00138info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:12:22Zoai:ri.conicet.gov.ar:11336/99055instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 12:12:23.1CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Comment on "how the huge energy of quantum vacuum gravitates to drive the slow accelerating expansion of the Universe"
title Comment on "how the huge energy of quantum vacuum gravitates to drive the slow accelerating expansion of the Universe"
spellingShingle Comment on "how the huge energy of quantum vacuum gravitates to drive the slow accelerating expansion of the Universe"
Mazzitelli, Francisco Diego
Cosmological Constant
Universe
Dark energy
Quantum gravity
title_short Comment on "how the huge energy of quantum vacuum gravitates to drive the slow accelerating expansion of the Universe"
title_full Comment on "how the huge energy of quantum vacuum gravitates to drive the slow accelerating expansion of the Universe"
title_fullStr Comment on "how the huge energy of quantum vacuum gravitates to drive the slow accelerating expansion of the Universe"
title_full_unstemmed Comment on "how the huge energy of quantum vacuum gravitates to drive the slow accelerating expansion of the Universe"
title_sort Comment on "how the huge energy of quantum vacuum gravitates to drive the slow accelerating expansion of the Universe"
dc.creator.none.fl_str_mv Mazzitelli, Francisco Diego
Trombetta, Leonardo Giuliano
author Mazzitelli, Francisco Diego
author_facet Mazzitelli, Francisco Diego
Trombetta, Leonardo Giuliano
author_role author
author2 Trombetta, Leonardo Giuliano
author2_role author
dc.subject.none.fl_str_mv Cosmological Constant
Universe
Dark energy
Quantum gravity
topic Cosmological Constant
Universe
Dark energy
Quantum gravity
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In a recent paper [Q. Wang, Z. Zhu, and W. G. Unruh, Phys. Rev. D 95, 103504 (2017)PRVDAQ2470-001010.1103/PhysRevD.95.103504] it was argued that, due to the fluctuations around its mean value, vacuum energy gravitates differently from what was previously assumed. As a consequence, the Universe would accelerate with a small Hubble expansion rate, solving the cosmological constant and dark energy problems. We point out here that the results depend on the type of cutoff used to evaluate the vacuum energy. In particular, they are not valid when one uses a covariant cutoff such that the zero-point energy density is positive definite.
Fil: Mazzitelli, Francisco Diego. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Trombetta, Leonardo Giuliano. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
description In a recent paper [Q. Wang, Z. Zhu, and W. G. Unruh, Phys. Rev. D 95, 103504 (2017)PRVDAQ2470-001010.1103/PhysRevD.95.103504] it was argued that, due to the fluctuations around its mean value, vacuum energy gravitates differently from what was previously assumed. As a consequence, the Universe would accelerate with a small Hubble expansion rate, solving the cosmological constant and dark energy problems. We point out here that the results depend on the type of cutoff used to evaluate the vacuum energy. In particular, they are not valid when one uses a covariant cutoff such that the zero-point energy density is positive definite.
publishDate 2018
dc.date.none.fl_str_mv 2018-03-15
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/99055
Mazzitelli, Francisco Diego; Trombetta, Leonardo Giuliano; Comment on "how the huge energy of quantum vacuum gravitates to drive the slow accelerating expansion of the Universe"; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; 97; 6; 15-3-2018; 1-2
2470-0029
CONICET Digital
CONICET
url http://hdl.handle.net/11336/99055
identifier_str_mv Mazzitelli, Francisco Diego; Trombetta, Leonardo Giuliano; Comment on "how the huge energy of quantum vacuum gravitates to drive the slow accelerating expansion of the Universe"; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; 97; 6; 15-3-2018; 1-2
2470-0029
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://doi.org/10.1103/PhysRevD.95.103504
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prd/abstract/10.1103/PhysRevD.97.068301
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.97.068301
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1801.00138
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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