Extended slow-roll conditions and rapid-roll conditions
Takeshi ChibaDepartment of Physics, College of Humanities and Sciences, Nihon University, Tokyo 156-8550, JapanMasahide YamaguchiDepartment of Physics and Mathematics, Aoyama Gakuin University, Sagamihara 229-8558, Japan
2008en
ABI
Abstract
We derive slow-roll conditions for a scalar field which is non-minimally coupled with gravity in a consistent manner and express spectral indices of scalar/tensor perturbations in terms of the slow-roll parameters. The conformal invariance of the curvature perturbation is proved without linear approximations. Rapid-roll conditions are also derived, and the relation with the slow-roll conditions is discussed.
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Cited by 10 references