Comment on ``Time-dependent quasi-Hermitian Hamiltonians and the unitary quantum evolution''

Abstract

In arXiv:0710.5653v1 M. Znojil claims that he has found and corrected an error in my paper: [Phys. Lett. B \textbf{650}, 208 (2007), arXiv:0706.1872v2] and that it is possible to escape its main conclusion, namely that the unitarity of the time-evolution and observability of the Hamiltonian imply time-independence of the metric operator. In this note I give a very short calculation showing that the analysis given by M. Znojil also leads to the same conclusion as of my above-mentioned paper. This is actually a reconfirmation of the validity of the results of the latter paper.

2 pages

References in corpus (2)

• Time-Dependent Pseudo-Hermitian Hamiltonians Defining a Unitary Quantum System and Uniqueness of the Metric Operator
• Time-dependent quasi-Hermitian Hamiltonians and the unitarity of quantum evolution

Cited by in corpus (6)

• Unitary quantum evolution for time-dependent quasi-Hermitian systems with non-observable Hamiltonians
• On the invariant method for the time-dependent non-Hermitian Hamiltonians
• Non-Hermitian coupled cluster method for non-stationary systems and its interaction-picture reinterpretation
• Reply to Comment on ``Time-dependent quasi-Hermitian Hamiltonians and the unitary quantum evolution''
• Comment on "Reply to Comment on Time-dependent Quasi-Hermitian Hamiltonians and the Unitary Quantum Evolution"
• Some Remarks on Quantum Brachistochrone