Evolution of cosmological perturbation in reheating phase of the universe

Yasusada Nambu, Atsushi Taruya

Research output: Contribution to journalArticlepeer-review

64 Citations (Scopus)


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 languageEnglish
Pages (from-to)83-89
Number of pages7
JournalProgress of Theoretical Physics
Issue number1
Publication statusPublished - Jan 1997
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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