Off-Diagonal Geometric Phases

Details Off-Diagonal Geometric Phases Off-Diagonal Geometric Phases

1999-11-18

arxiv.org/abs/quant-ph/9911083v2

Phys. Rev. Lett. 85, 3067 (2000)

Physics

Quantum Physics

5 pages 2 figures - RevTeX. Revised version including geometrical interpretation

Scientific paper

10.1103/PhysRevLett.85.3067

We investigate the adiabatic evolution of a set of non-degenerate eigenstates of a parameterized Hamiltonian. Their relative phase change can be related to geometric measurable quantities that extend the familiar concept of Berry phase to the evolution of more than one state. We present several physical systems where these concepts can be applied, including an experiment on microwave cavities for which off-diagonal phases can be determined from published data.

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