Quantum Measurement Back-Reaction and Induced Toplogical Phases
arXiv:quant-ph/9708043 · doi:10.1103/PhysRevLett.80.2023
Abstract
It is shown that a topological vector-potential (Berry phase) is induced by the act of measuring angular momentum in a direction defined by a reference particle. This vector potential appears as a consequence of the back-reaction due to the quantum measurement.
7 pages, Latex. Revised article. A detailed description of the regime of validity has been added. To appear in Phys. Rev. Lett