Higgs, Moduli Problem, Baryogenesis and Large Volume Compactifications
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.
Cite
@article{arxiv.1207.2771,
title = {Higgs, Moduli Problem, Baryogenesis and Large Volume Compactifications},
author = {Tetsutaro Higaki and Kohei Kamada and Fuminobu Takahashi},
journal= {arXiv preprint arXiv:1207.2771},
year = {2015}
}
Comments
46 pages; v2: Comments and references added; v3: dilution factor in the published version corrected, conclusion unchanged