Cosmic perturbations, baryon asymmetry, and dark matter from the minimal supersymmetric standard model

Keisuke Harigaya, Masaki Yamada

Research output: Contribution to journalArticlepeer-review

Abstract

Scalar fields in the minimal supersymmetric standard model may have large field values during inflation. Because of approximate global symmetry, it is plausible that the phase directions of them are nearly massless during inflation and obtain quantum fluctuations, which may be the origin of the cosmic perturbations. If perturbations are produced through Q-ball formation, baryon asymmetry and dark matter can be consistently generated. Significant baryon and dark matter isocurvature perturbations are produced, but they are predicted to nearly compensate each other. The lepton asymmetry is much larger than the baryon asymmetry. The scenario predicts local non-Gaussianity of fNL=5/3. The implication to the mass spectrum of supersymmetric particles is discussed.

Original languageEnglish
Article number121301
JournalPhysical Review D
Volume102
Issue number12
DOIs
Publication statusPublished - 2020 Dec 1
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Fingerprint

Dive into the research topics of 'Cosmic perturbations, baryon asymmetry, and dark matter from the minimal supersymmetric standard model'. Together they form a unique fingerprint.

Cite this