Primordial perturbation with a modified dispersion relation
arXiv:0906.3341 · doi:10.1103/PhysRevD.80.043520
Abstract
In this paper we study the generation of primordial perturbation with a modified dispersion relation in various cosmological evolutions. We stress that the formation of the power spectrum is strongly dependent on the background. Working in a bounce model with a matter-like contracting phase, we obtain a red tilt spectrum due to the modified dispersion relation.
6 pages, 2 figures, 1 table
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