Trans-Planckian footprints in inflationary cosmology

Abstract

We consider a minimum uncertainty vacuum choice at a fixed energy scale Lambda as an effective description of trans-Planckian physics, and discuss its implications for the linear perturbations of a massless scalar field in power-law inflationary models. We find possible effects with a magnitude of order H/Λin the power spectrum, in analogy with previous results for de-Sitter space-time.

4 pages, 1 figure, final version to appear in Physics Letters B

References in corpus (1)

• The Inflaton and Time in the Matter-Gravity System

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