Cosmological Radion Problem in Models with Extra Dimensions

Journal Article · Mon Apr 04 04:00:00 EDT 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1900519· OSTI ID:20630771

Perez-Lorenzana, Abdel ^[1]

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1. Departamento de Fisica, Centro de Investigacion y de Estudios Avanzados del I.P.N., Apdo. Post. 14-740, 07000, Mexico, D.F. (Mexico)

Moduli problem is a known common feature of models that involve extra compact dimensions, as the Kaluza-Klein theories, the String theory, and the large extra dimension models. Moduli are scalar fields that emerge when the configuration of the compact space is perturbed. Usually, these fields feel no potential and represent run away modes which makes it difficult to stabilize the shape of the compact manifold. The radion is a particular example of this type of fields, which is associated to the variations of the total volume of the compact space. Radions usually couple to all other fields, affecting the definition of coupling constants and gravity strength. Thus, they are a potential threat for cosmology of the early Universe. Here we discuss some aspects of radion dynamics during inflation, and show that a heavy radion (m >> H) seems to be required for a successful baryogenesis.

• OSTI ID: 20630771
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 758; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COMPACTIFICATION
COSMOLOGY
COUPLING CONSTANTS
DIMENSIONS
GRAVITATION
KALUZA-KLEIN THEORY
POTENTIALS
QUANTUM FIELD THEORY
SCALAR FIELDS
STRING MODELS
UNIVERSE