Inflaton Decay in Supergravity and Gravitino Problem

Journal Article · Tue Nov 20 00:00:00 EST 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2823823· OSTI ID:21039364

Takahashi, Fuminobu ^[1]

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1. Deutsches Elektronen Synchrotron DESY, Notkestrasse 85, 22607 Hamburg (Germany)

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.

• OSTI ID: 21039364
• Journal Information: AIP Conference Proceedings, Vol. 957, Issue 1; Conference: PASCOS 2007: 13. international symposium on particles, strings and cosmology, London (United Kingdom), 2-7 Jul 2007; Other Information: DOI: 10.1063/1.2823823; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COSMOLOGY
EXPECTATION VALUE
GRAVITONS
INFLATIONARY UNIVERSE
PARTICLE DECAY
POTENTIALS
QUANTUM FIELD THEORY
SUPERGRAVITY
SYMMETRY BREAKING