Thermal inflation and the moduli problem
- 15 February 1996
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 53 (4), 1784-1798
- https://doi.org/10.1103/physrevd.53.1784
Abstract
In supersymmetric theories a field can develop a vacuum expectation value M≫ GeV, even though its mass m is of order to GeV. The finite temperature in the early Universe can hold such a field at zero, corresponding to a false vacuum with an energy density ∼ . When the temperature falls below , the thermal energy density becomes negligible and an era of thermal inflation begins. It ends when the field rolls away from zero at a temperature of order m, corresponding to of order 10 e-folds of inflation which does not affect the density perturbation generated during ordinary inflation. Thermal inflation can solve the Polonyi or moduli problem if M is within one or two orders of magnitude of GeV. Parametric resonance may lead to rapid partial reheating giving a high enough temperature for a variety of methods of baryogenesis. One can also have double thermal inflation which can solve the Polonyi or moduli problem even more efficiently. © 1996 The American Physical Society.
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