Qualitative Analysis of Higher-Loop String Cosmology

Details Qualitative Analysis of Higher-Loop String Cosmology Qualitative Analysis of Higher-Loop String Cosmology

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998tx19.confe.192s&link_type=abstract

Abstracts of the 19th Texas Symposium on Relativistic Astrophysics and Cosmology, held in Paris, France, Dec. 14-18, 1998. Eds.:

Astronomy and Astrophysics

Astrophysics

Scientific paper

We investigate string cosmologies including higher-loop corrections to the dilaton coupling functions in the string effective action and containing barotropic type perfect fluid. The cases are considered when the corresponding dynamical system is exactly integrable. Without the specifying the dilaton coupling functions the qualitative analysis is carried out for either spatially flat, closed and open models. The possibilities of dilaton stabilization is considered by using Damour-Polyakov mechanism. As an illustration of this mechanism different examples of phase portraits are presented.

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