Extended Slow-Roll Conditions and Primordial Fluctuations: Multiple Scalar Fields and Generalized Gravity
classification
🌌 astro-ph
gr-qchep-phhep-th
keywords
gravityscalarslow-rollconditionsfieldsgeneralizedmultiplecoupled
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As an extension of our previous study, we derive slow-roll conditions for multiple scalar fields which are non-minimally coupled with gravity and for generalized gravity theories of the form $f(\phi,R)$. We provide simple formulae of the spectral indices of scalar/tensor perturbations in terms of the slow-roll parameters.
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