On "non-Hermitian Quantum Mechanics"

Details On "non-Hermitian Quantum Mechanics" On "non-Hermitian Quantum Mechanics"

2008-04-13

arxiv.org/abs/0804.2051v1

Physics

Quantum Physics

2 pages, no figures

Scientific paper

A series of recent papers ``Faster than Hermitian Quantum Mechanics'' and related articles made a point of the possibility of a non-Hermitian, but PT-symmetric, operator to play the role of a Hamiltonian. In particular, they show that with an appropriate choice of an inner product, the evolution generated by such an operator will conserve the norm and scalar product. Here we observe that if one chooses such an inner product then the Hamiltonian in question is actually Hermitian, and the whole exercise is to a certain degree redundant.

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