Monday, April 2, 2012

1203.6698 (Robert H. Brandenberger)

Unconventional Cosmology    [PDF]

Robert H. Brandenberger
I review two cosmological paradigms which are alternative to the current inflationary scenario. The first alternative is the "matter bounce", a non-singular bouncing cosmology with a matter-dominated phase of contraction. The second is an "emergent" scenario, which can be implemented in the context of "string gas cosmology". I will compare these scenarios with the inflationary one and demonstrate that all three lead to an approximately scale-invariant spectrum of cosmological perturbations.
View original: http://arxiv.org/abs/1203.6698

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