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Generalized Slow Roll Conditions and the Possibility of Intermediate Scale Inflation in Scalar-Tensor Theory

J. R. Morris
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Abstract

Generalized slow roll conditions and parameters are obtained for a general form of scalar-tensor theory (with no external sources), having arbitrary functions describing a nonminimal gravitational coupling F(ϕ), a Kahler-like kinetic function k(ϕ), and a scalar potential V(ϕ). These results are then used to analyze a simple toy model example of chaotic inflation with a single scalar field ϕand a standard Higgs potential and a simple gravitational coupling function. In this type of model inflation can occur with inflaton field values at an intermediate scale of roughly 10^{11} GeV when the particle physics symmetry breaking scale is approximately 1 TeV, provided that the theory is realized within the Jordan frame. If the theory is realized in the Einstein frame, however, the intermediate scale inflation does not occur.

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J. R. Morris. 2001-06-06. Generalized Slow Roll Conditions and the Possibility of Intermediate Scale Inflation in Scalar-Tensor Theory. https://doi.org/10.1088/0264-9381%2F18%2F15%2F311

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