Document Type
Article
Publication Date
5-20-2005
Publication Title
Physical Review D
Abstract
During the last ten years a detailed investigation of preheating was performed for chaotic inflation and for hybrid inflation. However, nonperturbative effects during reheating in the new inflation scenario remained practically unexplored. We investigate preheating in new inflation, using a combination of analytical and numerical methods. We find that the decay of the homogeneous component of the inflaton field and the resulting process of spontaneous symmetry breaking in the simplest models of new inflation usually occurs almost instantly: for the new inflation on the GUT scale it takes only about 5 oscillations of the field distribution. The decay of the homogeneous inflaton field is so efficient because of a combined effect of tachyonic preheating and parametric resonance. At that stage, the homogeneous oscillating inflaton field decays into a collection of waves of the inflaton field, with a typical wavelength of the order of the inverse inflaton mass. This stage usually is followed by a long stage of decay of the inflaton field into other particles, which can be described by the perturbative approach to reheating after inflation. The resulting reheating temperature typically is rather low.
Volume
71
Issue
103516
First Page
103516-1
Last Page
103516-10
DOI
DOI: 10.1103/PhysRevD.71.103516
ISSN
2470-0029
Rights
© 2005 The American Physical Society
Recommended Citation
Desroche, Mariel; Felder, Gary; Kratochvil, Jan M.; and Linde, Andrei, "Preheating in New Inflation" (2005). Physics: Faculty Publications, Smith College, Northampton, MA.
https://scholarworks.smith.edu/phy_facpubs/10
Comments
Archived as published.