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A note on the moduli-induced gravitino problem

Natalia Shuhmaher
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Abstract

The cosmological moduli problem has been recently reconsidered. Papers [1,2] show that even heavy moduli (m_ϕ> 10^5 GeV) can be a problem for cosmology if a branching ratio of the modulus into gravitini is large. In this paper, we discuss the tachyonic decay of moduli into the Standard Model's degrees of freedom, e.g. Higgs particles, as a resolution to the moduli-induced gravitino problem. Rough estimates on model dependent parameters set a lower bound on the allowed moduli at around 10^8 ~ 10^9 GeV.

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Natalia Shuhmaher. 2009-01-08. A note on the moduli-induced gravitino problem. https://doi.org/10.1088/1126-6708%2F2008%2F12%2F094

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