Cosmological rolling solutions of nonlocal theories
High Energy Physics - Theory
2010-05-07 v2 General Relativity and Quantum Cosmology
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.
Keywords
Cite
@article{arxiv.0904.4245,
title = {Cosmological rolling solutions of nonlocal theories},
author = {Gianluca Calcagni and Giuseppe Nardelli},
journal= {arXiv preprint arXiv:0904.4245},
year = {2010}
}
Comments
10 pages, 3 figures. v2: discussion expanded, references added.