Superluminal dispersion relations and the Unruh effect

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dc.creatorRinaldi, Massimiliano
dc.date2008-02-05
dc.date2008-05-26
dc.date.accessioned2026-07-07T11:55:51Z
dc.date.available2026-07-07T11:55:51Z
dc.descriptionIn the context of quantum gravity phenomenology, we study the Unruh effect in the presence of superluminal dispersion relations. In particular, we estimate the response function and the probability rate for an accelerated detector coupled to a massless scalar field, whose dispersion relation becomes essentially quadratic beyond a threshold momentum $k_p$. By means of perturbative analysis, we show that superluminal dispersion induces a correction to the Planckian spectrum, which tends to vanish as $k_p$ increases.
dc.descriptionFinal discussion expanded, references added. Version accepted for publication in Phys Rev D
dc.identifierhttps://arxiv.org/abs/0802.0618
dc.identifierhttp://arxiv.org/abs/0802.0618
dc.identifierPhys.Rev.D77:124029,2008
dc.identifierdoi:10.1103/PhysRevD.77.124029
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/205384
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Theory
dc.titleSuperluminal dispersion relations and the Unruh effect
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