Multitime-correlation functions and the atomic coherent-state representation

1 March 1975

journal article
research article
Published by American Physical Society (APS) in Physical Review A

Vol. 11 (3) , 973-980
https://doi.org/10.1103/physreva.11.973

Abstract

We consider the evaluation of multitime-correlation functions for quantum statistical systems characterized by dynamical variables of the angular-momentum type (such as, for example, paramagnetic or nuclear spins or collections of two-level atoms), and show how the atomic coherent-state representation of Arecchi et al. can be used to express the multitime averages in terms of phase-space integrals. Our calculation suggests a convenient classical-quantum correspondence rule for angular-momentum degrees of freedom.

Keywords

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