Problems and hopes in nonsymmetric gravity

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dc.creatorJanssen, Tomas
dc.creatorProkopec, Tomislav
dc.date2006-11-01
dc.date.accessioned2026-07-07T11:01:25Z
dc.date.available2026-07-07T11:01:25Z
dc.descriptionWe consider the linearized nonsymmetric theory of gravitation (NGT) within the background of an expanding universe and near a Schwarzschild mass. We show that the theory always develops instabilities unless the linearized nonsymmetric lagrangian reduces to a particular simple form. This form contains a gauge invariant kinetic term, a mass term for the antisymmetric metric-field and a coupling with the Ricci curvature scalar. This form cannot be obtained within NGT. Based on the linearized lagrangian we know to be stable, we consider the generation and evolution of quantum fluctuations of the antisymmetric gravitational field (B-field) from inflation up to the present day. We find that a B-field with a mass m ~ 0.03(H_I/10^(13)GeV)^4 eV is an excellent dark matter candidate.
dc.description9 pages, 1 figure. Based on two talks by the authors at the 2nd International Conference on Quantum Theories and Renormalization Group in Gravity and Cosmology (IRGAC) 2006, Barcelona
dc.identifierhttps://arxiv.org/abs/gr-qc/0611005
dc.identifierhttp://arxiv.org/abs/gr-qc/0611005
dc.identifierJ.Phys.A40:7067-7074,2007
dc.identifierdoi:10.1088/1751-8113/40/25/S63
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/187943
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.titleProblems and hopes in nonsymmetric gravity
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