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Cosmological evolution of scalar fields and gravitino dark matter in gauge mediation at low reheating temperatures

Research output: Contribution to journalJournal articlepeer-review

Article number3
<mark>Journal publication date</mark>02/2010
<mark>Journal</mark>Journal of Cosmology and Astroparticle Physics
Issue number2
Number of pages21
Publication StatusPublished
<mark>Original language</mark>English


We consider the dynamics of the supersymmetry-breaking scalar field and the production of dark matter gravitinos via its decay in a gauge-mediated supersymmetry breaking model with metastable vacuum. We find that the scalar field amplitude and gravitino density are extremely sensitive to the parameters of the hidden sector. For the case of an O'Raifeartaigh sector, we show that the observed dark matter density can be explained by gravitinos even for low reheating temperatures T_{R}

Bibliographic note

11 pages RevTex. Extended discussion and minor corrections, conclusions unaltered. Version to be published in JCAP