Fate of Z2 symmetric scalar field

Kyohei Mukaida; Kazunori Nakayama; Masahiro Takimoto

doi:10.1007/JHEP12(2013)053

Fate of Z₂ symmetric scalar field

Kyohei Mukaida, Kazunori Nakayama, Masahiro Takimoto

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

The evolution of a coherently oscillating scalar field with Z₂ 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 Z₂ symmetry.

Original language	English
Article number	53
Journal	Journal of High Energy Physics
Volume	2013
Issue number	12
DOIs	https://doi.org/10.1007/JHEP12(2013)053
Publication status	Published - 2013 Dec
Externally published	Yes

Keywords

Cosmology of Theories beyond the SM
Thermal Field Theory

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1007/JHEP12(2013)053

Cite this

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abstract = "The evolution of a coherently oscillating scalar field with Z2 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 Z2 symmetry.",

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