Time correlation functions for non-Hermitian quantum systems

  title={Time correlation functions for non-Hermitian quantum systems},
  author={Alessandro Sergi and Konstantin G. Zloshchastiev},
  journal={Physical Review A},
KwaZulu-Natal Node, National Institute for Theoretical Physics (NITheP), South Africa(Dated: December 19, 2014)We introduce a formalism for time-dependent correlation functions for systems whose evolutionsare governed by non-Hermitian Hamiltonians of general type. It turns out that one can define twodifferent types of time correlation functions. Both these definitions seem to be physically consistentwhile becoming equivalent only in certain cases. Moreover, when autocorrelation functions… 

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