Quantum effect on Kaluza-Klein cosmologies: High-temperature case

Kei Ichi Maeda

doi:10.1103/PhysRevD.32.2528

Quantum effect on Kaluza-Klein cosmologies: High-temperature case

Kei Ichi Maeda

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

6 Citations (Scopus)

Abstract

The time evolution of a higher-dimensional universe with a topology of R×Sd×SD is discussed by using the effective action in a high-temperature limit. The universe, which starts at high temperature, always comes out of thermal equilibrium. Consequently, nonthermal quantum effects such as particle production become very important. The conversion from gravitational entropy to matter entropy through particle production might give the present large entropy.

Original language	English
Pages (from-to)	2528-2538
Number of pages	11
Journal	Physical Review D
Volume	32
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevD.32.2528
Publication status	Published - 1985 Jan 1
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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abstract = "The time evolution of a higher-dimensional universe with a topology of R×Sd×SD is discussed by using the effective action in a high-temperature limit. The universe, which starts at high temperature, always comes out of thermal equilibrium. Consequently, nonthermal quantum effects such as particle production become very important. The conversion from gravitational entropy to matter entropy through particle production might give the present large entropy.",

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