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Pre-inflation models and WMAP data

Shiro Hirai
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Abstract

The effect of pre-inflation physics on the power spectrum of scalar perturbations is estimated and there is a possibility that the pre-inflation physics explains the Wilkinson Microwave Anisotropy Probe data if the length of inflation is near 60 e-folds. Considering various pre-inflation models with radiation-dominated or matter-dominated periods before inflation, the power spectrum of curvature perturbations for large scales is calculated, and the spectral index and running spectral index are derived.

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Shiro Hirai. 2004-04-27. Pre-inflation models and WMAP data. https://arxiv.org/abs/astro-ph/0404519

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