Stationary vs. singular points in an accelerating FRW cosmology derived from sixdimensional EinsteinGaussBonnet gravity
Abstract
Sixdimensional EinsteinGaussBonnet gravity (with a linear GaussBonnet term) is investigated. This theory is inspired by basic features of results coming from string and Mtheory. Dynamical compactification is carried out and it is seen that a fourdimensional accelerating FRW universe is recovered, when the twodimensional internal space radius shrinks. A nonperturbative structure of the corresponding theory is identified which has either three or one stable fixed points, depending on the GaussBonnet coupling being positive or negative. A much richer structure than in the case of the perturbative regime of the dynamical compactification recently studied by Andrew, Bolen, and Middleton is exhibited.
 Publication:

Physics Letters B
 Pub Date:
 January 2007
 DOI:
 10.1016/j.physletb.2006.11.031
 arXiv:
 arXiv:hepth/0611213
 Bibcode:
 2007PhLB..644....1E
 Keywords:

 High Energy Physics  Theory;
 Astrophysics;
 General Relativity and Quantum Cosmology;
 Mathematical Physics;
 Mathematics  Mathematical Physics
 EPrint:
 9 pages, 20 figures, accepted in PLB