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arXiv · 0906.3341

Primordial perturbation with a modified dispersion relation

Yi-Fu Cai·Xinmin Zhang
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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.

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Yi-Fu Cai, Xinmin Zhang. 2009-06-18. Primordial perturbation with a modified dispersion relation. https://doi.org/10.1103/physrevd.80.043520

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