Pseudo-Hermiticity, PT-symmetry, and the Metric Operator
arXiv:quant-ph/0508214 · doi:10.1007/s10582-005-0121-z
Abstract
The main achievements of Pseudo-Hermitian Quantum Mechanics and its distinction with the indefinite-metric quantum theories are reviewed. The issue of the non-uniqueness of the metric operator and its consequences for defining the observables are discussed. A systematic perturbative expression for the most general metric operator is offered and its application for a toy model is outlined.
5 pages, Contributed to the Proceedings of the 3rd International Workshop on Pseudo-Hermitian Hamiltonians in Quantum Physics, June 20-22, 2005, Koc University, Istanbul, Turkey