On the energy of homogeneous cosmologies

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dc.creatorNester, James M.
dc.creatorSo, Lau Loi
dc.creatorVargas, T.
dc.date2008-03-03
dc.date2008-03-23
dc.date.accessioned2026-07-07T11:48:49Z
dc.date.available2026-07-07T11:48:49Z
dc.descriptionAn energy for the homogeneous cosmological models is presented. More specifically, using an appropriate natural prescription, we find the energy within any region with any gravitational source for a large class of gravity theories--namely those with a tetrad description--for all 9 Bianchi types. Our energy is given by the value of the Hamiltonian with homogeneous boundary conditions; this value vanishes for all regions in all Bianchi class A models, and it does not vanish for any class B model. This is so not only for Einstein's general relativity but, moreover, for the whole 3-parameter class of tetrad-teleparallel theories. For the physically favored one parameter subclass, which includes the teleparallel equivalent of Einstein's theory as an important special case, the energy for all class B models is, contrary to expectation, negative.
dc.description11 pages, reformated with minor changes
dc.identifierhttps://arxiv.org/abs/0803.0181
dc.identifierhttp://arxiv.org/abs/0803.0181
dc.identifierPhys.Rev.D78:044035,2008
dc.identifierdoi:10.1103/PhysRevD.78.044035
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/203017
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleOn the energy of homogeneous cosmologies
dc.typetext

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