Infrared Propagator Corrections for Constant Deceleration

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dc.creatorJanssen, T. M.
dc.creatorMiao, S. P.
dc.creatorProkopec, T.
dc.creatorWoodard, R. P.
dc.date2008-08-18
dc.date.accessioned2026-07-07T12:15:17Z
dc.date.available2026-07-07T12:15:17Z
dc.descriptionWe derive the propagator for a massless, minimally coupled scalar on a $D$-dimensional, spatially flat, homogeneous and isotropic background with arbitrary constant deceleration parameter. Our construction uses the operator formalism, by integrating the Fourier mode sum. We give special attention to infrared corrections from the nonzero lower limit associated with working on finite spatial sections. These corrections eliminate infrared divergences that would otherwise be incorrectly treated by dimensional regularization, resulting in off-coincidence divergences for those special values of the deceleration parameter at which the infrared divergence is logarithmic. As an application we compute the expectation value of the scalar stress-energy tensor.
dc.description34 pages, uses LaTeX 2 epsilon
dc.identifierhttps://arxiv.org/abs/0808.2449
dc.identifierhttp://arxiv.org/abs/0808.2449
dc.identifierClass.Quant.Grav.25:245013,2008
dc.identifierdoi:10.1088/0264-9381/25/24/245013
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/211456
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Theory
dc.titleInfrared Propagator Corrections for Constant Deceleration
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