Decoherence due to the Horizon after Inflation

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dc.creatorSharman, Jonathan W.
dc.creatorMoore, Guy D.
dc.date2007-08-24
dc.date.accessioned2026-07-07T11:18:52Z
dc.date.available2026-07-07T11:18:52Z
dc.descriptionThe fluctuations in the inflaton field at the end of inflation which seed the density perturbations are prepared in a pure quantum state. It is generally assumed that some physics causes this pure state to decohere so that it should be treated probabilistically. We show that the entanglement entropy between the universe inside our observable horizon and that outside our horizon is sufficient to do this. For the modes which are super-Hubble at the end of inflation, this entanglement entropy grows with volume inside the horizon, rather than with the horizon's area, and is proportional to the number of e-folds since Hubble crossing.
dc.description11 pages
dc.identifierhttps://arxiv.org/abs/0708.3353
dc.identifierhttp://arxiv.org/abs/0708.3353
dc.identifierJCAP0711:020,2007
dc.identifierdoi:10.1088/1475-7516/2007/11/020
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/193495
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.titleDecoherence due to the Horizon after Inflation
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