Cosmological rolling solutions of nonlocal theories

Details Cosmological rolling solutions of nonlocal theories Cosmological rolling solutions of nonlocal theories

2009-04-27

arxiv.org/abs/0904.4245v2

Int. J. Mod. Phys. D19:329-338,2010

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, 3 figures. v2: discussion expanded, references added.

Scientific paper

10.1142/S0218271810016440

We find nonperturbative solutions of a nonlocal scalar field equation, with cubic or exponential potential on a cosmological background. The former case corresponds to the lowest level effective tachyon action of cubic string field theory. While the well known Minkowski solution is wildly oscillating, due to Hubble friction its cosmological counterpart describes smooth rolling towards the local minimum of the potential.

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