Scott Watson

Strings, Branes, and Cosmological Consequences

Brane Gas Cosmology (BGC) is an approach to M-theory cosmology in which the initial state of the Universe is taken to be small, dense and hot, with all fundamental degrees of freedom near thermal equilibrium. Such a starting point is in close analogy with the Standard Big Bang (SBB) model. The topology of the Universe is assumed to be toroidal in all nine spatial dimensions and is filled with a gas of p-branes. The dynamics of winding modes allows, at most, three spatial dimensions to become large, thus explaining the origin of our macroscopic 3+1-dimensional Universe. I will review the model and explain how it has been recently expanded to include more realistic backgrounds.
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