Effective action for delta potentials: Spacetime-dependent inhomogeneities and Casimir self-energy
- Autores
- Franchino Viñas, Sebastián Alberto; Mazzitelli, Francisco Diego
- Año de publicación
- 2021
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We study the vacuum fluctuations of a quantum scalar field in the presence of a thin and inhomogeneous flat mirror, modelled with a delta potential. Using Heat-Kernel techniques, we evaluate the Euclidean effective action perturbatively in the inhomogeneities (nonperturbatively in the constant background). We show that the divergences can be absorbed into a local counterterm, and that the remaining finite part is in general a nonlocal functional of the inhomogeneities, which we compute explicitly for massless fields in D = 4 dimensions. For time-independent inhomogeneities, the effective action gives the Casimir self-energy for a partially transmitting mirror. For time-dependent inhomogeneites, the Wick-rotated effective action gives the probability of particle creation due to the dynamical Casimir effect.
Facultad de Ciencias Exactas - Materia
-
Ciencias Exactas
Física
vacuum fluctuations
inhomogeneities - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/143583
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Effective action for delta potentials: Spacetime-dependent inhomogeneities and Casimir self-energyFranchino Viñas, Sebastián AlbertoMazzitelli, Francisco DiegoCiencias ExactasFísicavacuum fluctuationsinhomogeneitiesWe study the vacuum fluctuations of a quantum scalar field in the presence of a thin and inhomogeneous flat mirror, modelled with a delta potential. Using Heat-Kernel techniques, we evaluate the Euclidean effective action perturbatively in the inhomogeneities (nonperturbatively in the constant background). We show that the divergences can be absorbed into a local counterterm, and that the remaining finite part is in general a nonlocal functional of the inhomogeneities, which we compute explicitly for massless fields in D = 4 dimensions. For time-independent inhomogeneities, the effective action gives the Casimir self-energy for a partially transmitting mirror. For time-dependent inhomogeneites, the Wick-rotated effective action gives the probability of particle creation due to the dynamical Casimir effect.Facultad de Ciencias Exactas2021-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/143583enginfo:eu-repo/semantics/altIdentifier/issn/2470-0010info:eu-repo/semantics/altIdentifier/issn/2470-0029info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevd.103.065006info:eu-repo/semantics/altIdentifier/arxiv/2010.11144info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:32:36Zoai:sedici.unlp.edu.ar:10915/143583Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:32:37.08SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Effective action for delta potentials: Spacetime-dependent inhomogeneities and Casimir self-energy |
title |
Effective action for delta potentials: Spacetime-dependent inhomogeneities and Casimir self-energy |
spellingShingle |
Effective action for delta potentials: Spacetime-dependent inhomogeneities and Casimir self-energy Franchino Viñas, Sebastián Alberto Ciencias Exactas Física vacuum fluctuations inhomogeneities |
title_short |
Effective action for delta potentials: Spacetime-dependent inhomogeneities and Casimir self-energy |
title_full |
Effective action for delta potentials: Spacetime-dependent inhomogeneities and Casimir self-energy |
title_fullStr |
Effective action for delta potentials: Spacetime-dependent inhomogeneities and Casimir self-energy |
title_full_unstemmed |
Effective action for delta potentials: Spacetime-dependent inhomogeneities and Casimir self-energy |
title_sort |
Effective action for delta potentials: Spacetime-dependent inhomogeneities and Casimir self-energy |
dc.creator.none.fl_str_mv |
Franchino Viñas, Sebastián Alberto Mazzitelli, Francisco Diego |
author |
Franchino Viñas, Sebastián Alberto |
author_facet |
Franchino Viñas, Sebastián Alberto Mazzitelli, Francisco Diego |
author_role |
author |
author2 |
Mazzitelli, Francisco Diego |
author2_role |
author |
dc.subject.none.fl_str_mv |
Ciencias Exactas Física vacuum fluctuations inhomogeneities |
topic |
Ciencias Exactas Física vacuum fluctuations inhomogeneities |
dc.description.none.fl_txt_mv |
We study the vacuum fluctuations of a quantum scalar field in the presence of a thin and inhomogeneous flat mirror, modelled with a delta potential. Using Heat-Kernel techniques, we evaluate the Euclidean effective action perturbatively in the inhomogeneities (nonperturbatively in the constant background). We show that the divergences can be absorbed into a local counterterm, and that the remaining finite part is in general a nonlocal functional of the inhomogeneities, which we compute explicitly for massless fields in D = 4 dimensions. For time-independent inhomogeneities, the effective action gives the Casimir self-energy for a partially transmitting mirror. For time-dependent inhomogeneites, the Wick-rotated effective action gives the probability of particle creation due to the dynamical Casimir effect. Facultad de Ciencias Exactas |
description |
We study the vacuum fluctuations of a quantum scalar field in the presence of a thin and inhomogeneous flat mirror, modelled with a delta potential. Using Heat-Kernel techniques, we evaluate the Euclidean effective action perturbatively in the inhomogeneities (nonperturbatively in the constant background). We show that the divergences can be absorbed into a local counterterm, and that the remaining finite part is in general a nonlocal functional of the inhomogeneities, which we compute explicitly for massless fields in D = 4 dimensions. For time-independent inhomogeneities, the effective action gives the Casimir self-energy for a partially transmitting mirror. For time-dependent inhomogeneites, the Wick-rotated effective action gives the probability of particle creation due to the dynamical Casimir effect. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-03 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo 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://sedici.unlp.edu.ar/handle/10915/143583 |
url |
http://sedici.unlp.edu.ar/handle/10915/143583 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/2470-0010 info:eu-repo/semantics/altIdentifier/issn/2470-0029 info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevd.103.065006 info:eu-repo/semantics/altIdentifier/arxiv/2010.11144 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
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application/pdf |
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SEDICI (UNLP) - Universidad Nacional de La Plata |
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