Resonance structure for preheating with massless fields

David I. Kaiser
Phys. Rev. D 57, 702 – Published 15 January 1998
PDFExport Citation

Abstract

We extend recent work on the resonance structure for post-inflation reheating, providing an analytic treatment for models in which both the inflaton and the fields into which it decays are massless. Solutions are derived which are valid for either a spatially-flat or spatially-open metric. Closed-form solutions are given for the characteristic exponent, which measures the rate of particle production during preheating. It is demonstrated that in certain ranges of parameter space, the maximum values of the characteristic exponent in an open universe are several times greater than the maximum values in a spatially-flat universe. It is further demonstrated that the solutions found here by means of a simple algebraic construction match the two previously-known exact solutions, which were derived in terms of special functions.

  • Received 31 July 1997

DOI:https://doi.org/10.1103/PhysRevD.57.702

©1998 American Physical Society

Authors & Affiliations

David I. Kaiser

  • Lyman Laboratory of Physics, Harvard University, Cambridge, Massachusetts 02138

References (Subscription Required)

Click to Expand
Issue

Vol. 57, Iss. 2 — 15 January 1998

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review D

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×