Liouville Cosmology

Details Liouville Cosmology Liouville Cosmology

2005-02-28

arxiv.org/abs/gr-qc/0502119v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

23 pages latex, 2 eps figures, contribution to the proceedings of the Dark 2004 conference, College Station, October 2004

Scientific paper

Liouville string theory is a natural framework for discussing the non-equilibrium evolution of the Universe. It enables non-critical strings to be treated in mathematically consistent manner, in which target time is identified with a world-sheet renormalization-group scale parameter, preserving target-space general coordinate invariance and the existence of an S-matrix. We review our proposals for a unified treatment of inflation and the current acceleration of the Universe. We link the current acceleration of the Universe with the value of the string coupling. In such a scenario, the dilaton plays an essential background role, driving the acceleration of the Universe during the present era after decoupling as a constant during inflation.

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