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arXiv · 0904.4245

Cosmological rolling solutions of nonlocal theories

Gianluca Calcagni·Giuseppe Nardelli
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Abstract

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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Gianluca Calcagni, Giuseppe Nardelli. 2010-04-20. Cosmological rolling solutions of nonlocal theories. https://doi.org/10.1142/s0218271810016440

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