Cosmological perturbations in a generalized gravity including tachyonic condensation

Details Cosmological perturbations in a generalized gravity including tachyonic condensation Cosmological perturbations in a generalized gravity including tachyonic condensation

2002-06-12

arxiv.org/abs/hep-th/0206100v1

Phys.Rev.D66:084009,2002

Physics

High Energy Physics

High Energy Physics - Theory

5 pages

Scientific paper

10.1103/PhysRevD.66.084009

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 $f(\phi,R)$ 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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