Chameleon Vector Bosons

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dc.creatorNelson, A. E.
dc.creatorWalsh, J.
dc.date2008-02-06
dc.date.accessioned2026-07-07T11:40:08Z
dc.date.available2026-07-07T11:40:08Z
dc.descriptionWe show that for a force mediated by a vector particle coupled to a conserved U(1) charge, the apparent range and strength can depend on the size and density of the source, and the proximity to other sources. This "chameleon" effect is due to screening from a light charged scalar. Such screening can weaken astrophysical constraints on new gauge bosons. As an example we consider the constraints on chameleonic gauged B-L. We show that although Casimir measurements greatly constrain any B-L force much stronger than gravity with range longer than 0.1 microns, there remains an experimental window for a long range chameleonic B-L force. Such a force could be much stronger than gravity, and long or infinite range in vacuum, but have an effective range near the surface of the earth which is less than a micron.
dc.description10 pages
dc.identifierhttps://arxiv.org/abs/0802.0762
dc.identifierhttp://arxiv.org/abs/0802.0762
dc.identifierPhys.Rev.D77:095006,2008
dc.identifierdoi:10.1103/PhysRevD.77.095006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/200164
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleChameleon Vector Bosons
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