Inflation in the five-dimensional universe with an orbifold extra dimension

New inflationary solutions to the Einstein equation are explicitly constructed in a simple five-dimensional model with an orbifold extra dimension S 1/ Z 2. We consider inflation caused by cosmological constants for the five-dimensional bulk and the four-dimensional boundaries. In our solutions the...

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Bibliographic Details
Published in:Physics letters. B 1999, Vol.465 (1), p.81-85
Main Author: Nihei, Takeshi
Format: Article
Language:English
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Summary:New inflationary solutions to the Einstein equation are explicitly constructed in a simple five-dimensional model with an orbifold extra dimension S 1/ Z 2. We consider inflation caused by cosmological constants for the five-dimensional bulk and the four-dimensional boundaries. In our solutions the extra dimension is static, and the background metric has a non-trivial configuration in the extra dimension. In addition to the solution for a vanishing bulk cosmological constant, which has already been discussed, we obtain solutions for a non-zero one.
ISSN:0370-2693
1873-2445
DOI:10.1016/S0370-2693(99)01085-0