Effect of particle production on the evolution of a low entropy universe

T. Koikawa, Motohiko Yoshimura

Research output: Contribution to journalArticle

3 Citations (Scopus)


The oscillation of a classical field causes particle production, which then influences the evolution of the early universe. We examine this problem by solving a coupled system of Einstein-Boltzmann equations. In particular, particle production, caused by a damped oscillation of the extra space just prior to the compactification in vacuum Kaluza-Klein cosmology, leads to a period governed by an expansion law, with scale factor ∞ time.

Original languageEnglish
Pages (from-to)241-246
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number4
Publication statusPublished - May 30 1985
Externally publishedYes


ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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