Dynamics in Nonlocal Cosmological Models Derived from String Field Theory

L. Joukovskaya

Center for Theoretical Cosmology DAMTP, Cambridge

22 August 2007

COSMO 07

Dark Energy State Parameter w

WMAP3 - Wilkinson Microwave Anisotropy Probe +SNLS - Supernova Legacy Survey+Large scale structure

COSMO 07

A.Goobar (COSMO 07) w=-1.023-0.09M.Kunz (COSMO 07) -1.3<w<-0.7

COSMO 07

E.J. Copeland, M. Sami and Sh. Tsujikawa, 2006.

COSMO 07

I.Aref’eva, L.J., A. Koshelev, 2003;I.Aref’eva,; I.Aref’eva, L.J., 2005;I.Aref’eva, A.Koshelev, S.Vernov, 2005 ; I.Aref’eva, L.J., S.Vernov, 2007;G. Calcagni, 2004 2005;G. Calcagni, M. Montobbio, G. Nardelli, 2007; 2007;L.J., 2007.L.J., 2007.

COSMO 07

COSMO 07

For further investigation let us rewrite our action in dimensionless space-time variables

COSMO 07

L.J., arxiv: 0707.1545

COSMO 07

COSMO 07

COSMO 07

COSMO 07

COSMO 07

COSMO 07