Non-linear non-local Cosmology

Details Non-linear non-local Cosmology Non-linear non-local Cosmology

2008-10-30

arxiv.org/abs/0810.5471v1

Astronomy and Astrophysics

Astrophysics

6 pages, 7 figures. Prepared for 4th International Workshop on The Dark Side of the Universe, BUE, 1-5 June 2008

Scientific paper

Non-local equations of motion contain an infinite number of derivatives and commonly appear in a number of string theory models. We review how these equations can be rewritten in the form of a diffusion-like equation with non-linear boundary conditions. Moreover, we show that this equation can be solved as an initial value problem once a set of non-trivial initial conditions that satisfy the boundary conditions is found. We find these initial conditions by looking at the linear approximation to the boundary conditions. We then numerically solve the diffusion-like equation, and hence the non-local equations, as an initial value problem for the full non-linear potential and subsequently identify the cases when inflation is attained.

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