Cosmological Perturbations from a New-Physics Hypersurface

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dc.creatorBozza, V.
dc.creatorGiovannini, M.
dc.creatorVeneziano, G.
dc.date2003-02-24
dc.date2003-03-04
dc.date.accessioned2026-07-07T10:29:54Z
dc.date.available2026-07-07T10:29:54Z
dc.descriptionWithin a broad class of inflationary models we critically analyze the way initial quantum fluctuations on a new-physics hypersurface (NPH) affect standard predictions for large-scale cosmological perturbations. We find that these so-called transplanckian effects depend crucially on the definition of the "vacuum state" in particular on which Hamiltonian is minimized on the NPH in order to select such a state. Transplanckian effects can be made much smaller than previously suggested if sufficiently "adiabatic" Hamiltonians are minimized.
dc.description12 pages; corrected typos in the text; added two references
dc.identifierhttps://arxiv.org/abs/hep-th/0302184
dc.identifierhttp://arxiv.org/abs/hep-th/0302184
dc.identifierJCAP0305:001,2003
dc.identifierdoi:10.1088/1475-7516/2003/05/001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177970
dc.subjectHigh Energy Physics - Theory
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Phenomenology
dc.titleCosmological Perturbations from a New-Physics Hypersurface
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