Degenerate and critical domain walls and accelerating universes driven by bulk particles

Details Degenerate and critical domain walls and accelerating universes driven by bulk particles Degenerate and critical domain walls and accelerating universes driven by bulk particles

2009-03-31

arxiv.org/abs/0903.5533v1

Physics

High Energy Physics

High Energy Physics - Theory

13 pages, 4 figures

Scientific paper

We consider a scenario where our universe is taken as a three-dimensional domain wall embedded in a five-dimensional Minkowski space-time, as originally proposed by Brito and collaborators [1]. We explore the existence of a richer class of soliton solutions and their consequences for the acceleration of the universe driven by collisions of bulk particle excitations with the walls. In particular it is shown that some of these solutions should play a fundamental role throughout the expansion process.

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