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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/99055
Ver los metadatos del registro completo
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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 |
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https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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application/pdf application/pdf application/pdf application/pdf |
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American Physical Society |
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American Physical Society |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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