Frame-Independent Calculation of Spectral Indices from Inflation

Abstract

Spectral indices from models of inflation which incorporate a Generalized Einstein Theory (GET) gravity sector are calculated to first order in a slow-roll expansion. By quantizing a suitably- generalized measure of the intrinsic curvature perturbation, the spectral indices as calculated in the Jordan frame now match those as calculated following a conformal transformation, in the Einstein frame.

arXiv comment12pp. Plain LaTeX; no figures

References in corpus (3)

• Primordial Spectral Indices from Generalized Einstein Theories
• Metric Perturbations in Dilaton-Driven Inflation
• Gauge-Invariant Cosmological Perturbations in Generalized Einstein Theories

Cited by in corpus (6)

• The conformal frame freedom in theories of gravitation
• Primordial Spectral Indices from Generalized Einstein Theories
• Thermodynamical correspondence of $f(R)$ gravity in Jordan and Einstein frames
• Invariant slow-roll parameters in scalar-tensor theories
• Formalizing Slow-roll Inflation in Scalar-Tensor Theories of Gravitation
• Generalized Slow-roll Inflation in Non-minimally Coupled Theories