Evolution of nonlinear fluctuations in preheating after inflation

Yasusada Nambu, Yohei Araki

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


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 languageEnglish
Pages (from-to)511-525
Number of pages15
JournalClassical and Quantum Gravity
Issue number2
Publication statusPublished - Jan 21 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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