Nonadiabatic Geometric Phase and Hannay Angle: A Squeezed State Approach

Details Nonadiabatic Geometric Phase and Hannay Angle: A Squeezed State Approach Nonadiabatic Geometric Phase and Hannay Angle: A Squeezed State Approach

1998-08-08

arxiv.org/abs/cond-mat/9808084v1

Physics

Condensed Matter

4 Revtex pages, accepted for publication in Phys. Rev. Let.

Scientific paper

10.1103/PhysRevLett.81.1749

The geometric phases of the cyclic states of a generalized harmonic oscillator with nonadiabatic time-periodic parameters are discussed in the framework of squeezed state. A class of cyclic states are expressed as a superposition of an infinte number of squeezed states. Then, their geometric phases are obtained explicitly and found to be $-(n+1/2)$ times the classical nonadiabatic Hannay angle. It is shown that the analysis based on squeezed state approach provide a clear picture of the geometric meaning of the quantal phase.

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