Precision Predictions for the Primordial Power Spectra of Scalar Potential Models of Inflation

Abstract

We exploit a new numerical technique for evaluating the tree order contributions to the primordial scalar and tensor power spectra for scalar potential models of inflation. Among other things we use the formalism to develop a good analytic approximation which goes beyond generalized slow roll expansions in that (1) it is not contaminated by the physically irrelevant phase, (2) its 0th order term is exact for constant first slow roll parameter, and (3) the correction is multiplicative rather than additive. These features allow our formalism to capture at first order, effects which are higher order in other expansions. Although this accuracy is not necessary to compare current data with any specific model, our method has a number of applications owing to the simpler representation it provides for the connection between the power spectra and the expansion history of a general model.

40 pages, 10 figures, uses LaTeX2e version 2 revised for publication

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• Inflation as a spontaneous symmetry breaking of Weyl symmetry
• Final Thoughts on the Power Spectra of Scalar Potential Models
• The Inflaton Effective Potential for General $\epsilon$
• Inflaton Effective Potential from Photons for General $\epsilon$
• Coincident Massless, Minimally Coupled Scalar Correlators on General Cosmological Backgrounds
• From Non-trivial Geometries to Power Spectra and Vice Versa
• Improving the Single Scalar Consistency Relation
• Testing an Ansatz for the Leading Secular Loop Corrections from Quantum Gravity during Inflation
• The Effect of Features on the Functional Form of the Scalar Power Spectrum
• Inflaton Effective Potential from Fermions for General $\epsilon$
• Two-point correlators revisited: Fast and slow scales in multifield models of inflation
• How to Produce an Arbitrarily Small Tensor to Scalar Ratio
• Reheating with Effective Potentials