Dynamical Casimir effect with screened scalar fields
Dynamical Casimir effect with screened scalar fields
Understanding the nature of dark energy and dark matter is one of modern physics' greatest open problems. Scalar-tensor theories with screened scalar fields like the chameleon model are among the most popular proposed solutions. In this article, we present the first analysis of the impact of a chameleon field on the dynamical Casimir effect, whose main feature is the particle production associated with a resonant condition of boundary periodic motion in cavities. For this, we employ a recently developed method to compute the evolution of confined quantum scalar fields in a globally hyperbolic spacetime by means of time-dependent Bogoliubov transformations. As a result, we show that particle production is reduced due to the presence of the chameleon field. In addition, our results for the Bogoliubov coefficients and the mean number of created particles agree with known results in the absence of a chameleon field. Our results initiate the discussion of the evolution of quantum fields on screened scalar field backgrounds.
Báez-Camargo, Ana Lucía
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Hartley, Daniel
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Käding, Christian
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Fuentes, Ivette
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1 December 2024
Báez-Camargo, Ana Lucía
a179fdc4-7678-4bd6-9674-7fe3d3a0eb4f
Hartley, Daniel
56c5e7a3-4719-4e51-acdb-78dab90c95e1
Käding, Christian
26f340f1-be23-4771-adb0-66397668f20d
Fuentes, Ivette
c6d65a4c-feac-44c1-9097-e0f6a9e0cf44
Báez-Camargo, Ana Lucía, Hartley, Daniel, Käding, Christian and Fuentes, Ivette
(2024)
Dynamical Casimir effect with screened scalar fields.
AVS Quantum Science, 6 (4), [045001].
(doi:10.1116/5.0222082).
Abstract
Understanding the nature of dark energy and dark matter is one of modern physics' greatest open problems. Scalar-tensor theories with screened scalar fields like the chameleon model are among the most popular proposed solutions. In this article, we present the first analysis of the impact of a chameleon field on the dynamical Casimir effect, whose main feature is the particle production associated with a resonant condition of boundary periodic motion in cavities. For this, we employ a recently developed method to compute the evolution of confined quantum scalar fields in a globally hyperbolic spacetime by means of time-dependent Bogoliubov transformations. As a result, we show that particle production is reduced due to the presence of the chameleon field. In addition, our results for the Bogoliubov coefficients and the mean number of created particles agree with known results in the absence of a chameleon field. Our results initiate the discussion of the evolution of quantum fields on screened scalar field backgrounds.
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045001_1_5.0222082
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Accepted/In Press date: 19 September 2024
e-pub ahead of print date: 11 October 2024
Published date: 1 December 2024
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© 2024 Author(s).
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Local EPrints ID: 502333
URI: http://eprints.soton.ac.uk/id/eprint/502333
ISSN: 2639-0213
PURE UUID: 0cd2dac4-525e-49f9-9b52-6bf97b8d983b
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Date deposited: 23 Jun 2025 16:39
Last modified: 21 Aug 2025 04:51
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Author:
Ana Lucía Báez-Camargo
Author:
Daniel Hartley
Author:
Christian Käding
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