Open AccessGauge Mediation in Supergravity and Gravitino Dark Matter
Author(s) -
Masahiro Ibe,
Ryuichiro Kitano
Publication year - 2006
Language(s) - English
Resource type - Reports
DOI - 10.2172/895806
Subject(s) - gravitino , physics , particle physics , inflation (cosmology) , dark matter , supergravity , dark fluid , universe , theoretical physics , astrophysics , cosmology , supersymmetry , dark energy
Gravitinos and hidden sector fields often cause a cosmological disaster in supersymmetric models. We find that a model with gravitational gauge mediation solves such a problem quite naturally. The {mu}-problem is also absent in the model. Moreover, the abundance of gravitinos explains correct amount of dark matter of the universe. The dark matter abundance can be calculated without detailed information on the thermal history of the universe such as the reheating temperature after inflation
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