Full higher-dimensional analysis of moduli oscillation and radiation in expanding universe

A bstract We investigate effects of the radiation and the moduli oscillation around the stabilized values on the evolution of a 6-dimensional spacetime compactified on S 2 . In order to see the transition from the 5-dimensional space to the 3-dimensional one, we develop a procedure to pursue the spa...

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Bibliographic Details
Published in:The journal of high energy physics 2023-05, Vol.2023 (5), p.231-34, Article 231
Main Authors: Otsuka, Hajime, Sakamura, Yutaka
Format: Article
Language:English
Subjects:
Classical and Quantum Gravitation
Cosmology
Cosmology of Theories BSM
Dimensional analysis
Elementary Particles
Energy
Evolution
Extra Dimensions
High energy physics
Mathematical analysis
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Radiation
Regular Article - Theoretical Physics
Relativity
Relativity Theory
Spacetime
String Theory
Supergravity Models
Universe
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Summary:A bstract We investigate effects of the radiation and the moduli oscillation around the stabilized values on the evolution of a 6-dimensional spacetime compactified on S 2 . In order to see the transition from the 5-dimensional space to the 3-dimensional one, we develop a procedure to pursue the spacetime evolution with appropriate approximations, which is valid until the spacetime behaves like 4-dimensional. In the case that the moduli stabilization process cannot be described in the context of the 4-dimensional effective theory, it takes quite a long time for the moduli oscillation to dominate the total energy density, in contrast to the conventional result obtained by the 4-dimensional effective theory approach. We also found that even if the moduli are set at the stabilized values, they start to oscillate due to the pressure in the extra space S 2 in some cases.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP05(2023)231