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Gravity waves and gravitino dark matter in μ-hybrid inflation.
- Source :
-
Physics Letters B . Dec2018, Vol. 787, p141-145. 5p. - Publication Year :
- 2018
-
Abstract
- Abstract We propose a novel reformulation of supersymmetric (more precisely μ -) hybrid inflation based on a local U(1) or any suitable extension of the minimal supersymmetric standard model (MSSM) which also resolves the μ problem. We employ a suitable Kahler potential which effectively yields quartic inflation with non-minimal coupling to gravity. Imposing the gravitino Big Bang Nucleosynthesis (BBN) constraint on the reheat temperature (T r ≲ 10 6 GeV) and requiring a neutralino LSP, the tensor to scalar ratio (r) has a lower bound r ≳ 0.004. The U(1) symmetry breaking scale lies between 108 and 1012 GeV. We also discuss a scenario with gravitino dark matter whose mass is a few GeV. [ABSTRACT FROM AUTHOR]
- Subjects :
- *GRAVITY waves
*GRAVITINO
*DARK matter
*SUPERSYMMETRY
NEUTRALINOS
Subjects
Details
- Language :
- English
- ISSN :
- 03702693
- Volume :
- 787
- Database :
- Academic Search Index
- Journal :
- Physics Letters B
- Publication Type :
- Academic Journal
- Accession number :
- 133423392
- Full Text :
- https://doi.org/10.1016/j.physletb.2018.10.057