String Dilaton Fluid Cosmology
arXiv:gr-qc/9805046 · doi:10.1142/S0218271899000183
Abstract
We investigate -dimensional string-dilaton cosmology with effective dilaton potential in presence of perfect-fluid matter.We get exact solutions parametrized by the constant $\gam$ of the state equation $p=(\gam-1)ρ$, the spatial dimension number , the bulk of matter, and the spatial curvature constant . Several interesting cosmological behaviours are selected. Finally we discuss the recovering of ordinary Einstein gravity starting from string dominated regime and a sort of asymptotic freedom due to string effective coupling.
16 pages, Latex, submitted to Int. Jou. Mod. Phys. D