Future singularity free accelerating expansion with the modified Poisson brackets

Details Future singularity free accelerating expansion with the modified Poisson brackets Future singularity free accelerating expansion with the modified Poisson brackets

2006-12-04

arxiv.org/abs/gr-qc/0612023v2

Phys.Rev.D75:024025,2007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

13 pages, 2 figures; v2. to appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.75.024025

We show that the second accelerating expansion of the universe appears smoothly from the decelerating universe remarkably after the initial inflation in the two-dimensional soluble semi-classical dilaton gravity along with the modified Poisson brackets of noncommutativity between the relevant fields. However, the ordinary solution coming from the equations of motion following the conventional Poisson algebra describes permanent accelerating universe without any phase change. In this modified model, it turns out that the phase transition is related to the noncommutative Poisson algebra.

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