# F eb 2 00 7 DAMTP-2007-5 Bouncing and Accelerating Solutions in Nonlocal Stringy Models

@inproceedings{Arefeva2007FE2, title={F eb 2 00 7 DAMTP-2007-5 Bouncing and Accelerating Solutions in Nonlocal Stringy Models}, author={I. Ya. Aref’eva and L. V. Joukovskaya and S. Yu. Vernov}, year={2007} }

- Published 2007

A general class of cosmological models driven by a nonlocal scalar field inspired by string field theories is studied. In particular cases the scalar field is a string dilaton or a string tachyon. A distinguished feature of these models is a crossing of the phantom divide. We reveal the nature of this phenomena showing that it is caused by an equivalence of the initial nonlocal model to a model with an infinite number of local fields some of which are ghosts. Deformations of the model that… CONTINUE READING