Aharonov-Bohm-Casher problem with a nonminimal Lorentz-violating coupling

作者：Belich H^*; Silva E O; Ferreira M M Jr; Orlando M T D

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2011, 83(12): 125025.

DOI：10.1103/PhysRevD.83.125025

The Aharonov-Bohm-Casher problem is examined for a charged particle describing a circular path in the presence of a Lorentz-violating background that is nonminimally coupled to a spinor and a gauge field. The particle eigenenergies were evaluated, showing that the LV background is able to lift the original degenerescence in the absence of magnetic field even for a neutral particle. The Aharonov-Casher phase is used to impose an upper bound on the background magnitude. A similar analysis is accomplished in a space endowed with a topological defect, revealing that both the disclination parameter and the LV background are able to modify the particle eigenenergies. We also analyze a particular case where the particles interact harmonically with the topological defect and the LV background, with similar results.

• 出版日期2011-6-24