Lorentz-symmetry violating decays in a medium
| dc.creator | Nieves, José F. | |
| dc.creator | Pal, Palash B. | |
| dc.date | 2007-12-28 | |
| dc.date.accessioned | 2026-07-07T11:54:53Z | |
| dc.date.available | 2026-07-07T11:54:53Z | |
| dc.description | Various decay processes, such as the decay of a spin-1 particle into two photons or the gravitational decay of a spin-1/2 fermion, are forbidden in the vacuum by a combination of requirements, including angular momentum conservation, Lorentz invariance and gauge invariance. We show that such processes can occur in a medium, such as a thermal background of particles, even if it is homogeneous and isotropic. We carry out a model-independent analysis of the vertex function for such processes in terms of a set of form factors, and show that the amplitude can be non-zero while remaining consistent with the symmetry principles mentioned above. The results simulate Lorentz symmetry violating effects, although in this case they arise from completely Lorentz-invariant physics. | |
| dc.description | 16 pages, Latex, no figures | |
| dc.identifier | https://arxiv.org/abs/0712.4345 | |
| dc.identifier | http://arxiv.org/abs/0712.4345 | |
| dc.identifier | Phys.Rev.D77:113001,2008 | |
| dc.identifier | doi:10.1103/PhysRevD.77.113001 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/205067 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Lorentz-symmetry violating decays in a medium | |
| dc.type | text |