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arXiv · hep-th/0206100

Cosmological perturbations in a generalized gravity including tachyonic condensation

J. Hwang·H. Noh
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Abstract

We present unified ways of handling the cosmological perturbations in a class of gravity theory covered by a general action in eq. (1). This gravity includes our previous generalized $f(ϕ,R)$ gravity and the gravity theory motivated by the tachyonic condensation. We present general prescription to derive the power spectra generated from vacuum quantum fluctuations in the slow-roll inflation era. An application is made to a slow-roll inflation based on the tachyonic condensation with an exponential potential.

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J. Hwang, H. Noh. 2002-06-12. Cosmological perturbations in a generalized gravity including tachyonic condensation. https://doi.org/10.1103/physrevd.66.084009

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