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|Title:||Geometric phase in PT-symmetric quantum mechanics||Authors:||Gong, J.
|Issue Date:||13-Jul-2010||Citation:||Gong, J., Wang, Q.-H. (2010-07-13). Geometric phase in PT-symmetric quantum mechanics. Physical Review A - Atomic, Molecular, and Optical Physics 82 (1) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevA.82.012103||Abstract:||Unitary evolution in PT-symmetric quantum mechanics (QM) with a time-dependent metric is found to yield an interesting class of adiabatic processes. As an explicit example, a Berry-like phase associated with a PT-symmetric two-level system is derived and is interpreted as the flux of a fictitious monopole with a tunable charge plus a singular string component with nontrivial phase contributions. To gain more insight, the Hermitian analog of our non-Hermitian problem is also analyzed, which results in an intriguing class of geometric-phase problems in conventional QM as well, where the Hamiltonian includes a perturbative term that is proportional to the rate of change in adiabatic parameters. © 2010 The American Physical Society.||Source Title:||Physical Review A - Atomic, Molecular, and Optical Physics||URI:||http://scholarbank.nus.edu.sg/handle/10635/96718||ISSN:||10502947||DOI:||10.1103/PhysRevA.82.012103|
|Appears in Collections:||Staff Publications|
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