Nonsingular Dilaton Cosmology

Details Nonsingular Dilaton Cosmology Nonsingular Dilaton Cosmology

1998-06-28

arxiv.org/abs/gr-qc/9806111v2

JHEP 9808 (1998) 007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

7 pages, uses RevTeX and psfrag, 2 figures (minor typos fixed)

Scientific paper

10.1088/1126-6708/1998/08/007

We study spatially homogeneous and isotropic solutions to the equations of motion derived from dilaton gravity, in the presence of a special combination of higher derivative terms in the gravitational action. All solutions are nonsingular. For initial conditions resembling those in the pre-big-bang scenario, there are solutions corresponding to a spatially flat, bouncing Universe originating in a dilaton-dominated contracting phase and emerging as an expanding Friedmann Universe.

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