Classical decay of inflaton
High Energy Physics - Phenomenology
2011-05-05 v2 Astrophysics
General Relativity and Quantum Cosmology
Abstract
We present the first fully non-linear calculation of inflaton decay. We map inflaton decay onto an equivalent classical problem and solve the latter numerically. In the model, we find that parametric resonance develops slower and ends at smaller values of fluctuating fields, as compared to estimates existing in literature. We also observe a number of qualitatively new phenomena, including a stage of semiclassical thermalization, during which the decay of inflaton is essentially as effective as during the resonance stage.
Cite
@article{arxiv.hep-ph/9603378,
title = {Classical decay of inflaton},
author = {S. Yu. Khlebnikov and I. I. Tkachev},
journal= {arXiv preprint arXiv:hep-ph/9603378},
year = {2011}
}
Comments
10 pages, 3 figures, LaTeX. A misprint in the in-line formula after eq.(6) is corrected; the remark on renormalization is improved; factor 1/24 in the definition of $T_{\rm eff}$ is replaced by the correct 1/12