Effects of singular external fields and boundary condition on the vacuum of massless fermions in QFT
arXiv:hep-th/0106077
Abstract
Effects of the configuration of an external static magnetic field in the form of a singular vortex on the vacuum of a quantized massless spinor field are studied. The most general boundary conditions at the punctured singular point which make the twodimensional Dirac Hamiltonian to be self-adjoint are employed.
10 pages, LateX, to be published in Proceedings of the International Conference "Quantization, Gauge Theory, and Strings" dedicated to the memory of Professor Efim Fradkin (June 5-10, 2000, Moscow, Russia)