Question of the nonlocality of the Aharonov-Casher effect

作者：Benni Reznik, Yakir Aharonov · 发表于：Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 年份：1989 · DOI：10.1103/physrevd.40.4178 · 被引用次数：70 · 研究领域：Quantum and electron transport phenomena、Physics of Superconductivity and Magnetism、Quantum Mechanics and Non-Hermitian Physics

The Aharanov-Casher effect is manifested in a (2+1)-dimensional model that screens the electromagnetic fields, in order to demonstrate that the effect is essentially nonlocal in its nature. The question of nonlocality is discussed by means of a nonrelativistic model for a superconductor. It is demonstrated that although the superconductor screens the electric field generated by an external charge it does not screen the modular electric field which is a constant of motion of the system. Consequently, a magnetic fluxon will accumulate the same phase as if the electric field were unscreened and the Aharonov-Casher effect will exist even in a force-free region.