Lanczos potentials and a definition of gravitational entropy for perturbed FLRW space-times

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dc.creatorMena, Filipe C.
dc.creatorTod, Paul
dc.date2007-02-09
dc.date.accessioned2026-07-07T10:22:06Z
dc.date.available2026-07-07T10:22:06Z
dc.descriptionWe give a prescription for constructing a Lanczos potential for a cosmological model which is a purely gravitational perturbation of a Friedman-Lemaitre-Robertson-Walker space-time. For the radiation equation of state, we find the Lanczos potential explicitly via Fourier transforms. As an application, we follow up a suggestion of Penrose and propose a definition of gravitational entropy for these cosmologies. With this definition, the gravitational entropy initially is finite if and only if the initial Weyl tensor is finite.
dc.description16 pages, submitted for publication in Classical and Quantum Gravity
dc.identifierhttps://arxiv.org/abs/gr-qc/0702057
dc.identifierhttp://arxiv.org/abs/gr-qc/0702057
dc.identifierClass.Quant.Grav.24:1733-1746,2007
dc.identifierdoi:10.1088/0264-9381/24/7/004
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/175398
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleLanczos potentials and a definition of gravitational entropy for perturbed FLRW space-times
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