Evolution of Cosmological Perturbation in Reheating Phase of the Universe | Zendy

Yasusada Nambu | Zendy; Atsushi Taruya | Zendy

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Evolution of Cosmological Perturbation in Reheating Phase of the Universe

Author(s) -

Yasusada Nambu,

Atsushi Taruya

Publication year - 1997

Publication title -

progress of theoretical physics

Language(s) - English

Resource type - Journals

eISSN - 1347-4081

pISSN - 0033-068X

DOI - 10.1143/ptp.97.83

Subject(s) - physics , inflaton , perturbation (astronomy) , cosmological perturbation theory , scalar field , mathematical physics , back reaction , classical mechanics , cosmology , parametric oscillator , quantum electrodynamics , theoretical physics , inflation (cosmology) , quantum mechanics

The evolution of the cosmological perturbation during the oscillatory stageof the scalar field is investigated. For the power law potential of theinflaton field, the evolution equation of the Mukhanov's gauge invariantvariable is reduced to the Mathieu equation and the density perturbation growsby the parametric resonance.Comment: 10 pages, 1 figure

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