We introduce a non-Hermitian (nH) generalization of the gauge-invariant Yang-Kobe phase for non-conservative quantum systems. The nH Yang phase is shown to be invariant under non-unitary (bicanonical) transformations, unlike the nH generalization of Berry's phase. It arises for a system evolution that is neither adiabatic nor cyclic, and its relations with the Samuel-Bhandari phase are briefly outlined.
Mignani, R. (1992). YANG PHASE FOR NONHERMITIAN SYSTEMS AND BIUNITARY TRANSFORMATIONS. PHYSICS LETTERS A, 162(2), 115-121 [10.1016/0375-9601(92)90986-V].
YANG PHASE FOR NONHERMITIAN SYSTEMS AND BIUNITARY TRANSFORMATIONS
MIGNANI, ROBERTO
1992-01-01
Abstract
We introduce a non-Hermitian (nH) generalization of the gauge-invariant Yang-Kobe phase for non-conservative quantum systems. The nH Yang phase is shown to be invariant under non-unitary (bicanonical) transformations, unlike the nH generalization of Berry's phase. It arises for a system evolution that is neither adiabatic nor cyclic, and its relations with the Samuel-Bhandari phase are briefly outlined.File in questo prodotto:
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