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arXiv · 1207.2771

Higgs, Moduli Problem, Baryogenesis and Large Volume Compactifications

Tetsutaro Higaki·Kohei Kamada·Fuminobu Takahashi
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Abstract

We consider the cosmological moduli problem in the context of high-scale supersymmetry breaking suggested by the recent discovery of the standard-model like Higgs boson. In order to solve the notorious moduli-induced gravitino problem, we focus on the LARGE volume scenario, in which the modulus decay into gravitinos can be kinematically forbidden. We then consider the Affleck-Dine mechanism with or without an enhanced coupling with the inflaton, taking account of possible Q-ball formation. We show that the baryon asymmetry of the present Universe can be generated by the Affleck-Dine mechanism in LARGE volume scenario, solving the moduli and gravitino problems. We also find that the overall volume modulus decays into a pair of the axionic superpartners, which contribute to the extra relativistic degrees of freedom.

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Tetsutaro Higaki, Kohei Kamada, Fuminobu Takahashi. 2012-09-23. Higgs, Moduli Problem, Baryogenesis and Large Volume Compactifications. https://doi.org/10.1007/jhep09(2012)043

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