A generic estimate of trans-Planckian modifications to the primordial power spectrum in inflation

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dc.creatorEasther, Richard
dc.creatorGreene, Brian R.
dc.creatorKinney, William H.
dc.creatorShiu, Gary
dc.date2002-04-16
dc.date.accessioned2026-07-07T10:34:13Z
dc.date.available2026-07-07T10:34:13Z
dc.descriptionWe derive a general expression for the power spectra of scalar and tensor fluctuations generated during inflation given an arbitrary choice of boundary condition for the mode function at a short distance. We assume that the boundary condition is specified at a short-distance cutoff at a scale $M$ which is independent of time. Using a particular prescription for the boundary condition at momentum $p = M$, we find that the modulation to the power spectra of density and gravitational wave fluctuations is of order $(H/M)$, where $H$ is the Hubble parameter during inflation, and we argue that this behavior is generic, although by no means inevitable. With fixed boundary condition, we find that the shape of the modulation to the power spectra is determined entirely by the deviation of the background spacetime from the de Sitter limit.
dc.description15 pages (RevTeX), 2 figures
dc.identifierhttps://arxiv.org/abs/hep-th/0204129
dc.identifierhttp://arxiv.org/abs/hep-th/0204129
dc.identifierPhys.Rev.D66:023518,2002
dc.identifierdoi:10.1103/PhysRevD.66.023518
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/179399
dc.subjectHigh Energy Physics - Theory
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleA generic estimate of trans-Planckian modifications to the primordial power spectrum in inflation
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