Inflation in loop quantum cosmology: Dynamics and spectrum of gravitational waves

Details Inflation in loop quantum cosmology: Dynamics and spectrum of gravitational waves Inflation in loop quantum cosmology: Dynamics and spectrum of gravitational waves

2010-03-24

arxiv.org/abs/1003.4660v2

Phys.Rev.D81:104049,2010

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

11 pages, 14 figures. Matches version published in Phys. Rev. D

Scientific paper

Loop quantum cosmology provides an efficient framework to study the evolution of the Universe beyond the classical Big Bang paradigm. Because of holonomy corrections, the singularity is replaced by a "bounce". The dynamics of the background is investigated into the details, as a function of the parameters of the model. In particular, the conditions required for inflation to occur are carefully considered and are shown to be generically met. The propagation of gravitational waves is then investigated in this framework. By both numerical and analytical approaches, the primordial tensor power spectrum is computed for a wide range of parameters. Several interesting features could be observationally probed.

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