Stationary vs. singular points in an accelerating FRW cosmology derived from six-dimensional Einstein–Gauss–Bonnet gravity
Six-dimensional Einstein–Gauss–Bonnet gravity (with a linear Gauss–Bonnet term) is investigated. This theory is inspired by basic features of results coming from string and M-theory. Dynamical compactification is carried out and it is seen that a four-dimensional accelerating FRW universe is recover...
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Published in | Physics letters. B Vol. 644; no. 1; pp. 1 - 6 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English Russian |
Published |
Amsterdam
Elsevier B.V
01.01.2007
Elsevier Science |
Subjects | |
Online Access | Get full text |
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Summary: | Six-dimensional Einstein–Gauss–Bonnet gravity (with a linear Gauss–Bonnet term) is investigated. This theory is inspired by basic features of results coming from string and M-theory. Dynamical compactification is carried out and it is seen that a four-dimensional accelerating FRW universe is recovered, when the two-dimensional internal space radius shrinks. A non-perturbative structure of the corresponding theory is identified which has either three or one stable fixed points, depending on the Gauss–Bonnet 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. |
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ISSN: | 0370-2693 1873-2445 |
DOI: | 10.1016/j.physletb.2006.11.031 |