Cosmological constant and quantum gravitational corrections to the running fine structure constant

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dc.creatorToms, David J.
dc.date2008-09-23
dc.date.accessioned2026-07-07T11:45:51Z
dc.date.available2026-07-07T11:45:51Z
dc.descriptionThe quantum gravitational contribution to the renormalization group behavior of the electric charge in Einstein-Maxwell theory with a cosmological constant is considered. Quantum gravity is shown to lead to a contribution to the running charge not present when the cosmological constant vanishes. This re-opens the possibility, suggested by Robinson and Wilczek, of altering the scaling behaviour of gauge theories at high energies although our result differs. We show the possibility of an ultraviolet fixed point that is linked directly to the cosmological constant.
dc.description4 pages, RevTex, to appear in Phys. Rev. Lett
dc.identifierhttps://arxiv.org/abs/0809.3897
dc.identifierhttp://arxiv.org/abs/0809.3897
dc.identifierPhys.Rev.Lett.101:131301,2008
dc.identifierdoi:10.1103/PhysRevLett.101.131301
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/202023
dc.subjectHigh Energy Physics - Theory
dc.titleCosmological constant and quantum gravitational corrections to the running fine structure constant
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