The relic problem of string gas cosmology

Journal Article · Tue Sep 15 00:00:00 EDT 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.80.063518· OSTI ID:21322692

Battefeld, Diana; Battefeld, Thorsten ^[1]

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1. Helsinki Institute of Physics, P.O. Box 64, FIN-00014 Helsinki (Finland) and APC, UMR 7164, 10 rue Alice Domon et Leonie Duquet, 75205 Paris Cedex 13 (France)

We discuss the relic problem of string gas cosmology (SGC) using gravitinos and magnetic monopoles as examples. Since SGC operates near or at the Hagedorn temperature, relics are produced copiously; in the absence of dilution, their abundances are too large. A subsequent phase of reheating can solve the gravitino problem, but fails to dilute monopoles sufficiently. We propose a subsequent phase of inflation as the most natural solution to the monopole problem; unfortunately, inflation marginalizes almost all potential achievements of SGC, with the exception of a possible explanation of the dichotomy of space (why did only three dimensions inflate?)

• OSTI ID: 21322692
• Journal Information: Physical Review. D, Particles Fields, Vol. 80, Issue 6; Other Information: DOI: 10.1103/PhysRevD.80.063518; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ABUNDANCE
COSMOLOGICAL MODELS
COSMOLOGY
DILUTION
EXCEPTIONS
GRAVITONS
MAGNETIC MONOPOLES
MATHEMATICAL SOLUTIONS
POTENTIALS
SPACE
STRING MODELS