Brane Gas Inflation

Details Brane Gas Inflation Brane Gas Inflation

2001-09-22

arxiv.org/abs/hep-ph/0109207v1

JHEP 0202 (2002) 032

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 1 figure

Scientific paper

10.1088/1126-6708/2002/02/032

We consider the brane gas picture of the early universe. At later stages, when there are no winding modes and the background is free to expand, we show that a moving 3-brane, which we identify with our universe, can inflate even though it is radiation-dominated. The crucial ingredients for successful inflation are the coupling to the dilaton and the equation of state of the bulk. If we suppose the brane initially forms in a collision of higher-dimensional branes, then the spectrum of primordial density fluctuations naturally has a thermal origin.

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