Inflation, supergravity and superstrings
May, 199415 pages
Published in:
- Phys.Rev.D 51 (1995) 6847-6853
e-Print:
- hep-ph/9405389 [hep-ph]
Report number:
- KUNS-1261
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Abstract:
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 K\"{a}hler potential that eliminates the rest. I then show that K\"{a}hler potentials of this form can give rise to a new class of models of inflation, the simplest examples of which give a spectral index for the density perturbations and negligible gravitational waves. Finally I point out that K\"{a}hler potentials of this form are contained in the K\"{a}hler potentials that have been derived from superstrings.- inflation
- potential: Kaehler
- supersymmetry
- string model
- supergravity
- gravitational radiation
- perturbation: density
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