Fate of $Z_2$ Symmetric Scalar Field
High Energy Physics - Phenomenology
2013-12-18 v2 Cosmology and Nongalactic Astrophysics
Abstract
The evolution of a coherently oscillating scalar field with symmetry is studied in detail. We calculate the dissipation rate of the scalar field based on the closed time path formalism. Consequently, it is shown that the energy density of the coherent oscillation can be efficiently dissipated if the coupling constant is larger than the critical value, even though the scalar particle is stable due to the symmetry.
Keywords
Cite
@article{arxiv.1308.4394,
title = {Fate of $Z_2$ Symmetric Scalar Field},
author = {Kyohei Mukaida and Kazunori Nakayama and Masahiro Takimoto},
journal= {arXiv preprint arXiv:1308.4394},
year = {2013}
}
Comments
32 pages, 2 figures; v2: reflect the published version