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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Detalles Bibliográficos
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
Descripción
Sumario: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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