Off-Diagonal Metrics and Anisotropic Brane Inflation

Details Off-Diagonal Metrics and Anisotropic Brane Inflation Off-Diagonal Metrics and Anisotropic Brane Inflation

2001-09-14

arxiv.org/abs/hep-th/0109114v2

Chapter 9 in: "Clifford and Riemann Finsler Structures in Geometric Mechanics and Gravity, Selected Works by S. Vacaru, P. Sta

Physics

High Energy Physics

High Energy Physics - Theory

7 pages, Revtex, version 2 with changed affiliation and references

Scientific paper

We study anisotropic reheating (entropy production) on 3D brane from a decaying bulk scalar field in the brane-world picture of the Universe by considering off-diagonal metrics and anholonomic frames. We show that a significant amount of, in general, anisotropic dark radiation is produced in this process unless only the modes which satisfy a specific relation are excited. We conclude that subsequent entropy production within the brane is required in general before primordial nucleosynthesis and that the presence of off-diagonal components (like in the Salam, Strathee and Petracci works) of the bulk metric modifies the processes of entropy production which could substantially change the brane-world picture of the Universe.

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