Friday, 9 December 2016

quantum mechanics - Why is time evolution unitary in $PT$-symmetry?


I have a question on the time evolution for a $PT$-symmetric Hamiltonian. So far I have only read that time evolution was unitary because $H$ commutes with $PT$ and the newly constructed operator $C$ but I don't really understand why this implicates that time evolution is unitary. Can someone explain that to me?




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