Accelerating Cosmologies in the Einstein-Gauss-Bonnet Theory with Dilaton

Details Accelerating Cosmologies in the Einstein-Gauss-Bonnet Theory with Dilaton Accelerating Cosmologies in the Einstein-Gauss-Bonnet Theory with Dilaton

2007-07-30

arxiv.org/abs/0707.4334v3

Prog.Theor.Phys.118:879-892,2007

Physics

High Energy Physics

High Energy Physics - Theory

18 pages, 10 figures, PTPTeX, accepted for publication in PTP

Scientific paper

10.1143/PTP.118.879

We study cosmological solutions in the low-energy effective heterotic string theory, which is the Einstein gravity with Gauss-Bonnet term and the dilaton. We show that the field equations are cast into an autonomous system for flat internal and external spaces, and derive all the fixed points in the system. We also examine the time evolution of the solutions and whether the solutions can give (transient) accelerated expansion of our four-dimensional space in the Einstein frame.

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