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Inflation with High Derivative Couplings

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arxiv astro-ph/0610514 v3 pith:VPTE322I submitted 2006-10-17 astro-ph gr-qchep-th

classification astro-phgr-qchep-th
keywords spectrumindexscalarspectralbluecoupledinflationmode
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abstract

We study a class of generalized inflation models in which the inflaton is coupled to the Ricci scalar by a general $f(\phi, R)$ term. The scalar power spectrum, the spectral index, the running of the spectral index, the tensor mode spectrum and a new consistency relation of the model are calculated. We discuss in detail the issues of how to diagonize the coupled perturbation equations, how to deal with an entropy-like source, and how to determine the initial condition by quantization. By studying some explicit models, we find that rich phenomena such as a blue scalar power spectrum, a large running of the spectral index, and a blue tensor mode spectrum can be obtained.

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Cited by 1 Pith paper

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  1. Precision Inflationary Predictions: Impact of Accurate End-of-Inflation Dynamics

    astro-ph.CO 2024-07 unverdicted novelty 6.0 of 10

    Improved end-of-inflation dynamics shift the Starobinsky model's predicted spectral index n_s by up to 1.2×10^{-3} within the allowed reheating range.

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