Entropy production by domain wall decay in the NMSSM

Hironori Hattori, Tatsuo Kobayashi, Naoya Omoto, and Osamu Seto
Phys. Rev. D 92, 103518 – Published 24 November 2015

Abstract

We consider domain walls in the Z3 symmetric next-to-minimal supersymmetric standard model. The spontaneous Z3 discrete symmetry breaking produces domain walls, and the stable domain walls are problematic. Thus, we assume the Z3 symmetry is slightly but explicitly broken and the domain walls decay. Such a decay causes a large late-time entropy production. We study its cosmological implications on unwanted relics such as the moduli, gravitino, lightest superparticle, and axion.

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  • Received 22 October 2015

DOI:https://doi.org/10.1103/PhysRevD.92.103518

© 2015 American Physical Society

Authors & Affiliations

Hironori Hattori, Tatsuo Kobayashi, and Naoya Omoto

  • Department of Physics, Hokkaido University, Sapporo 060-0810, Japan

Osamu Seto

  • Department of Life Science and Technology, Hokkai-Gakuen University, Sapporo 062-8605, Japan

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Vol. 92, Iss. 10 — 15 November 2015

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