Cosmological Evolution of String Effective Gravitation with a Dilaton Potential and Higher-Loop Corrections. I |
| |
| Authors: | A A Saharian |
| |
| Institution: | (1) Yerevan State University, Armenia |
| |
| Abstract: | Cosmological evolution is investigated within the framework of low-energy string gravitation with higher-loop corrections to the dilaton coupling functions in the presence of a dilaton potential and a nongravitational source. It is shown that for homogeneous and isotropic models with a flat space, the cosmological system of equations reduces to an autonomous, third-order, dynamical system. Subclasses of models with a constant dilaton, which provide the basis for various cosmological mechanisms of dilaton stabilization, are considered. A class of solutions is distinguished with asymptotic scaling behavior of the energy density of the dilaton field. |
| |
| Keywords: | cosmology theory cosmology evolution cosmology gravity |
| 本文献已被 SpringerLink 等数据库收录！ |
|
