Minimal supergravity, inflation, and all that
نویسندگان
چکیده
منابع مشابه
Minimal Supergravity, Inflation, and All That
We consider an inflationary model in the hidden-sector broken supergravity with an effectively large cutoff. The inflaton decay into right-handed neutrinos naturally causes the observed baryon asymmetry of the universe with a reheating temperature low enough to avoid the gravitino overproduction. We emphasize that all the phenomenological requirements from cosmology and particle physics are sat...
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Sergio Ferrara,* Renata Kallosh, Andrei Linde, and Massimo Porrati Physics Department, Theory Unit, CERN, CH 1211 Geneva 23, Switzerland INFN—Laboratori Nazionali di Frascati, Via Enrico Fermi 40, I-00044 Frascati, Italy Department of Physics and SITP, Stanford University, Stanford, California 94305, USA Department of Physics, CCPP, NYU 4 Washington Place, New York, New York 10016, USA (Receive...
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D-term inflation is one of the most interesting and versatile models of inflation. It is possible to implement naturally D-term inflation within high energy physics, as for example SUSY GUTs, SUGRA, or string theories. D-term inflation avoids the η-problem, while in its standard form it always ends with the formation of cosmic strings. Given the recent three-year WMAP data on the cosmic microwa...
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Hybrid inflation is a natural scenario in the absence of supersymmetry. In the context of supergravity, however, it has to face the naturalness problems of the initial conditions and of the adequate suppression of the inflaton mass. Both can be successfully addressed in a class of models involving Kähler potentials associated with products of SU(1, 1)/U(1) Kähler manifolds and “decoupled” field...
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The positive potential energy required for inflation spontaneously breaks supersymmetry and in general gives any would-be inflaton an effective mass of order the inflationary Hubble parameter thus ruling it out as an inflaton. In this paper I give simple conditions on the superpotential that eliminate some potential sources for this mass, and derive a form for the Kähler potential that eliminat...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2006
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2006.04.011