Isotropization of a Rotating and Longitudinally Expanding ϕ(4) Scalar System

We study numerically the evolution of an expanding system of scalar fields. The initial configuration is non-isotropic and rotating. We calculate the energy–momentum tensor and angular momentum vector of the system. We compare the time scales associated with the isotropization of the transverse and...

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Autores principales: Carrington, Margaret E., Kunstatter, Gabor, Phillips, Christopher D., Rubio, Marcelo E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9689836/
https://www.ncbi.nlm.nih.gov/pubmed/36359701
http://dx.doi.org/10.3390/e24111612
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author Carrington, Margaret E.
Kunstatter, Gabor
Phillips, Christopher D.
Rubio, Marcelo E.
author_facet Carrington, Margaret E.
Kunstatter, Gabor
Phillips, Christopher D.
Rubio, Marcelo E.
author_sort Carrington, Margaret E.
collection PubMed
description We study numerically the evolution of an expanding system of scalar fields. The initial configuration is non-isotropic and rotating. We calculate the energy–momentum tensor and angular momentum vector of the system. We compare the time scales associated with the isotropization of the transverse and longitudinal pressures, and the decay of the initial angular momentum. We show that even a fairly large initial angular momentum decays significantly faster than the pressure anisotropy.
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spelling pubmed-96898362022-11-25 Isotropization of a Rotating and Longitudinally Expanding ϕ(4) Scalar System Carrington, Margaret E. Kunstatter, Gabor Phillips, Christopher D. Rubio, Marcelo E. Entropy (Basel) Article We study numerically the evolution of an expanding system of scalar fields. The initial configuration is non-isotropic and rotating. We calculate the energy–momentum tensor and angular momentum vector of the system. We compare the time scales associated with the isotropization of the transverse and longitudinal pressures, and the decay of the initial angular momentum. We show that even a fairly large initial angular momentum decays significantly faster than the pressure anisotropy. MDPI 2022-11-05 /pmc/articles/PMC9689836/ /pubmed/36359701 http://dx.doi.org/10.3390/e24111612 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Carrington, Margaret E.
Kunstatter, Gabor
Phillips, Christopher D.
Rubio, Marcelo E.
Isotropization of a Rotating and Longitudinally Expanding ϕ(4) Scalar System
title Isotropization of a Rotating and Longitudinally Expanding ϕ(4) Scalar System
title_full Isotropization of a Rotating and Longitudinally Expanding ϕ(4) Scalar System
title_fullStr Isotropization of a Rotating and Longitudinally Expanding ϕ(4) Scalar System
title_full_unstemmed Isotropization of a Rotating and Longitudinally Expanding ϕ(4) Scalar System
title_short Isotropization of a Rotating and Longitudinally Expanding ϕ(4) Scalar System
title_sort isotropization of a rotating and longitudinally expanding ϕ(4) scalar system
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9689836/
https://www.ncbi.nlm.nih.gov/pubmed/36359701
http://dx.doi.org/10.3390/e24111612
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