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  Reheating and dangerous relics in pre-big bang string cosmology

Buonanno, A., Lemoine, M., & Olive, K. A. (2000). Reheating and dangerous relics in pre-big bang string cosmology. Physical Review D, 62: 083513. doi:10.1103/PhysRevD.62.083513.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-84E2-3 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-84E4-0
Genre: Journal Article

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 Creators:
Buonanno, Alessandra1, 2, Author              
Lemoine, Martin, Author
Olive, Keith A., Author
Affiliations:
1Theoretical Astrophysics and Relativity Group, California Institute of Technology, Pasadena, California, escidoc:persistent22              
2Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, escidoc:1933290              

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Free keywords: High Energy Physics - Theory, hep-th,General Relativity and Quantum Cosmology, gr-qc,High Energy Physics - Phenomenology, hep-ph
 Abstract: We discuss the mechanism of reheating in pre-big bang string cosmology and we calculate the amount of moduli and gravitinos produced gravitationally and in scattering processes of the thermal bath. We find that this abundance always exceeds the limits imposed by big-bang nucleosynthesis, and significant entropy production is required. The exact amount of entropy needed depends on the details of the high curvature phase between the dilaton-driven inflationary era and the radiation era. We show that the domination and decay of the zero-mode of a modulus field, which could well be the dilaton, or of axions, suffices to dilute moduli and gravitinos. In this context, baryogenesis can be accomodated in a simple way via the Affleck-Dine mechanism and in some cases the Affleck-Dine condensate could provide both the source of entropy and the baryon asymmetry.

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 Dates: 2000-06-072000-09-262000
 Publication Status: Published in print
 Pages: 29 pages, 1 figure, RevTeX; some references added
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: hep-th/0006054
DOI: 10.1103/PhysRevD.62.083513
URI: http://arxiv.org/abs/hep-th/0006054
 Degree: -

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Title: Physical Review D
  Other : Phys. Rev. D.
Source Genre: Journal
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Publ. Info: Lancaster, Pa. : American Physical Society
Pages: - Volume / Issue: 62 Sequence Number: 083513 Start / End Page: - Identifier: ISSN: 0556-2821
CoNE: http://pubman.mpdl.mpg.de/cone/journals/resource/111088197762258