Kalb-Ramond axion production in anisotropic string cosmologies

Abstract

We compute the energy spectra for massless Kalb-Ramond axions in four-dimensional anisotropic string cosmological models. We show that, when integrated over directions, the four-dimensional anisotropic model leads to infra-red divergent spectra similar to the one found in the isotropic case.

7 pages Latex, 3 postscript figs. included, submitted to PRD

References in corpus (3)

• The graceful exit in pre-big bang string cosmology
• Cosmic Microwave Background anisotropies and extra dimensions in String Cosmology
• Anisotropic 'hairs' in string cosmology

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• Anisotropic Four-Dimensional NS-NS String Cosmology
• Does curvature-dilaton coupling with Kalb Ramond field lead to an accelerating Universe ?
• Minimal coupling of the Kalb-Ramond field to a scalar field
• Graviton production from extra dimensions
• Spherically symmetric solution in a space-time with torsion