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/Lambda in the power spectrum, in analogy with previous results for de-Sitter space-time.
TRANSPLANCKIAN FOOTPRINTS IN INFLATIONARY COSMOLOGY / G.L. Alberghi; R. Casadio; A. Tronconi. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 579:(2004), pp. 1-5. [10.1016/j.physletb.2003.11.004]
TRANSPLANCKIAN FOOTPRINTS IN INFLATIONARY COSMOLOGY.
ALBERGHI, GIAN LUIGI;CASADIO, ROBERTO;TRONCONI, ALESSANDRO
2004
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/Lambda in the power spectrum, in analogy with previous results for de-Sitter space-time.File in questo prodotto:
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