Evolution of nonlinear fluctuations in preheating after inflation

Yasusada Nambu; Yohei Araki

doi:10.1088/0264-9381/23/2/015

Evolution of nonlinear fluctuations in preheating after inflation

Yasusada Nambu, Yohei Araki

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

9 Citations (Scopus)

Abstract

We investigate the evolution of the nonlinear long wavelength fluctuations during preheating after inflation. By using the separate universe approach, the temporal evolution of the power spectrum of the scalar fields and the curvature variable is obtained numerically. We found that the amplitude of the large-scale fluctuations is suppressed after nonlinear evolution during preheating.

Original language	English
Pages (from-to)	511-525
Number of pages	15
Journal	Classical and Quantum Gravity
Volume	23
Issue number	2
DOIs	https://doi.org/10.1088/0264-9381/23/2/015
Publication status	Published - Jan 21 2006
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1088/0264-9381/23/2/015

Cite this

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title = "Evolution of nonlinear fluctuations in preheating after inflation",

abstract = "We investigate the evolution of the nonlinear long wavelength fluctuations during preheating after inflation. By using the separate universe approach, the temporal evolution of the power spectrum of the scalar fields and the curvature variable is obtained numerically. We found that the amplitude of the large-scale fluctuations is suppressed after nonlinear evolution during preheating.",

author = "Yasusada Nambu and Yohei Araki",

year = "2006",

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doi = "10.1088/0264-9381/23/2/015",

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AU - Araki, Yohei

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N2 - We investigate the evolution of the nonlinear long wavelength fluctuations during preheating after inflation. By using the separate universe approach, the temporal evolution of the power spectrum of the scalar fields and the curvature variable is obtained numerically. We found that the amplitude of the large-scale fluctuations is suppressed after nonlinear evolution during preheating.

AB - We investigate the evolution of the nonlinear long wavelength fluctuations during preheating after inflation. By using the separate universe approach, the temporal evolution of the power spectrum of the scalar fields and the curvature variable is obtained numerically. We found that the amplitude of the large-scale fluctuations is suppressed after nonlinear evolution during preheating.

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DO - 10.1088/0264-9381/23/2/015

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VL - 23

SP - 511

EP - 525

JO - Classical and Quantum Gravity

JF - Classical and Quantum Gravity

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Evolution of nonlinear fluctuations in preheating after inflation

Abstract

All Science Journal Classification (ASJC) codes

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