Inflaton Decay in Supergravity and Gravitino Problem
Sep, 20075 pages
Part of Proceedings on 13th International Symposium on Particles, strings, and cosmology (PASCOS 2007) : London, UK, July 2-7, 2007, 441-444, Interplay between high energy physics and cosmophysics: KEK cosmophysics group inaugural conference 'Accelerators in the Universe'. Tsukuba, Japan, March 12-14 2008, 57-60
Published in:
- AIP Conf.Proc. 957 (2007) 1, 441-444,
- AIP Conf.Proc. 1040 (2008) 1, 57-60
Contribution to:
- Published: Aug 29, 2008
e-Print:
- 0709.1786 [hep-ph]
Report number:
- DESY-07-144
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Abstract: (AIP)
We have recently shown that, if the inflaton has a nonzero vacuum expectation value, it generically couples to any matter fields that appear in the superpotential at the tree level, and to any gauge sectors through anomalies in the supergravity. Through these processes, the inflaton generically decays into the supersymmetry breaking sector, producing many gravitinos. The inflaton also directly decays into a pair of the gravitinos. Taking account of these processes, we derive constraints on both inflation models and supersymmetry breaking scenarios for avoiding overproduction of the gravitinos.- 98.70.Vc
- 95.30.Sf
- 12.60.-i
- 98.80.Ft
- 98.80.Cq
- 11.30.Qc
- 04.65.+e
- 95.35.+d
- cosmology
- standard model
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