The universe dynamics from topological considerations |
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Authors: | Miguel A García-Aspeitia and Tonatiuh Matos |
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Institution: | (1) Department of Physics & Astronomy, University of Southern California, College of Letters, Arts & Sciences, Los Angeles, CA 90089-0484, USA;(2) Department of Physics, University of California, Davis, Davis, CA 95616, USA;; |
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Abstract: | We explore the possibility that the dynamics of the universe can be reproduced choosing appropriately the initial global topology
of the Universe. In this work we start with two concentric spherical three-dimensional branes S
3, with radius a
1 < a
2 immersed in a five-dimensional space-time. The novel feature of this model is that in the interior brane there exist only
spin-zero fundamental fields (scalar fields), while in the exterior one there exist only spin-one fundamental interactions.
As usual, the bulk of the universe is dominated by gravitational interactions. In this model, like in the Ekpyrotic one, the
Big Bang is consequence of the collision of the branes and causes the existence of the particles predicted by the standard
model in the exterior brane (our universe). The scalar fields on the interior brane interact with the spin-one fields on the
exterior one only through gravitation, they induce the effect of Scalar Field Dark Matter with an ultra-light mass on the
exterior one. We discuss two different regimes where the energy density and the brane tension are compared, with the aim to
obtain the observed dynamics of the universe after the collision of the branes. |
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Keywords: | |
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