Evolution of cosmological perturbation in reheating phase of the universe

Yasusada Nambu; Atsushi Taruya

doi:10.1143/PTP.97.83

Evolution of cosmological perturbation in reheating phase of the universe

Yasusada Nambu, Atsushi Taruya

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

60 Citations (Scopus)

Abstract

The evolution of the cosmological perturbation during the oscillatory stage of the scalar field is investigated. For the power law potential of the inflaton field, the evolution equation of Mukhanov's gauge invariant variable is reduced to the Mathieu equation, and the density perturbation grows due to parametric resonance.

Original language	English
Pages (from-to)	83-89
Number of pages	7
Journal	Progress of Theoretical Physics
Volume	97
Issue number	1
DOIs	https://doi.org/10.1143/PTP.97.83
Publication status	Published - Jan 1997
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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abstract = "The evolution of the cosmological perturbation during the oscillatory stage of the scalar field is investigated. For the power law potential of the inflaton field, the evolution equation of Mukhanov's gauge invariant variable is reduced to the Mathieu equation, and the density perturbation grows due to parametric resonance.",

author = "Yasusada Nambu and Atsushi Taruya",

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Evolution of cosmological perturbation in reheating phase of the universe

Abstract

All Science Journal Classification (ASJC) codes

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