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Title: Geometric phase for mixed states
Authors: Tong, D.-M. 
Chen, J.-L. 
Du, J.-F.
Issue Date: Jun-2003
Citation: Tong, D.-M., Chen, J.-L., Du, J.-F. (2003-06). Geometric phase for mixed states. Chinese Physics Letters 20 (6) : 793-795. ScholarBank@NUS Repository.
Abstract: The geometric phase of mixed states with non-degenerate eigenvalues is investigated. A general formula of geometric phase for mixed state under unitary evolution is given. In particular, we also furnish an expression of Hamiltonians for equivalent evolutions, by which one can understand what kind of evolutional operator U(t) (or Hamiltonian) is related to zero instantaneous dynamic phase. Moreover, the geometric phase and related Hamiltonians in the spin-half case are provided as an explicit example.
Source Title: Chinese Physics Letters
ISSN: 0256307X
DOI: 10.1134/S1054660X06020344
Appears in Collections:Staff Publications

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