Scalar Domain Wall as the Universe

Details Scalar Domain Wall as the Universe Scalar Domain Wall as the Universe

2012-02-24

arxiv.org/abs/1202.5375v2

Physics

High Energy Physics

High Energy Physics - Theory

LaTeX, 12 pages, references are added and typos are corrected

Scientific paper

By using the formulation of the reconstruction, we construct models which have an exact solution describing the domain wall. The shape of the domain wall can be flat, de Sitter space-time, or anti-de Sitter space-time. In the constructed domain wall solutions, there often appears ghost with negative kinetic energy. We give, however, an example of the de Sitter domain wall solution without ghost, which could be a toy model of the inflation. We also investigate the localization of the gravity as in the Randall-Sundrum model. It is shown that the four dimensional Newton law could be reproduced even in the de Sitter space-time domain wall solution.

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