Axino dark matter in brane world cosmology

Abstract

We discuss dark matter in the brane world scenario. We work in the Randall-Sundrum type II brane world and assume that the lightest supersymmetric particle is the axino. We find that the axinos can play the role of cold dark matter in the universe, provided that the five-dimensional Planck mass is bounded both from below and from above. This is possible for higher reheating temperatures compared to the conventional four-dimensional cosmology due to a novel expansion law for the universe.

1+11 pages, version submitted to JCAP

References in corpus (1)

• A brane world cosmological solution to the gravitino problem

Cited by in corpus (7)

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• Gravitino dark matter in brane-world cosmology
• Dark matter in supersymmetric models with axino LSP in Randall-Sundrum II brane model