Power-law modulation of the scalar power spectrum from a heavy field with a monomial potential

Abstract

The effects of heavy fields modulate the scalar power spectrum during inflation. We analytically calculate the modulations of the scalar power spectrum from a heavy field with a separable monomial potential, i.e. V(ϕ)~ϕ^n. In general the modulation is characterized by a power-law oscillation which is reduced to the logarithmic oscillation in the case of n=2.

18 pages, 1 figure

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• Planck residuals anomaly as a fingerprint of alternative scenarios to inflation
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• Back to the features: assessing the discriminating power of future CMB missions on inflationary models
• Fingerprints of a Non-Inflationary Universe from Massive Fields
• Scalar induced gravitational waves review
• Non-Standard Primordial Clocks from Dynamical Mass in Alternative to Inflation Scenarios