English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

In arXiv:0710.5653v1 M. Znojil claims that he has found and corrected anerror 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 theunitarity of the time-evolution and observability of the Hamiltonian implytime-independence of the metric operator. In this note I give a very shortcalculation showing that the analysis given by M. Znojil also leads to the sameconclusion as of my above-mentioned paper. This is actually a reconfirmation ofthe validity of the results of the latter paper.

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