English

Horizon Problem Remediation via Deformed Phase Space

General Relativity and Quantum Cosmology 2011-09-28 v2 Cosmology and Nongalactic Astrophysics High Energy Physics - Theory

Abstract

We investigate the effects of a special kind of dynamical deformation between the momenta of the scalar field of the Brans-Dicke theory and the scale factor of the FRW metric. This special choice of deformation includes linearly a deformation parameter. We trace the deformation footprints in the cosmological equations of motion when the BD coupling parameter goes to infinity. One class of the solutions gives a constant scale factor in the late time that confirms the previous result obtained via another approach in the literature. This effect can be interpreted as a quantum gravity footprint in the coarse grained explanation. The another class of the solutions removes the big bang singularity, and the accelerating expansion region has an infinite temporal range which overcomes the horizon problem. After this epoch, there is a graceful exiting by which the universe enters in the radiation dominated era.

Keywords

Cite

@article{arxiv.1006.5893,
  title  = {Horizon Problem Remediation via Deformed Phase Space},
  author = {S. M. M. Rasouli and Mehrdad Farhoudi and Nima Khosravi},
  journal= {arXiv preprint arXiv:1006.5893},
  year   = {2011}
}

Comments

13 pages, 2 figures, to appear in GERG

R2 v1 2026-06-21T15:43:00.089Z