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Cambridge University Press eBooks

Coherent states and related formalism

Giampiero V. M. Esposito, Giuseppe Marmo, Gennaro Miele, George Sudarshan

Published Oct 31, 2014• 0 citations
Publisher
DOI
10.1017/cbo9781139875950.009

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An investigation is made of the extent to which harmonicoscillator coherent states can bc used to describe superconductivity and Joscphson tunneling phenomena. Recent work has utilized angularmomentum commutation relations for operators that create and annihilate pairs in a Josephson device. This formalism utilizes certain approximations in obtaining angular-momentum commutation rules for the superconducting tunnel junction. We apply the coupled harmonicoscillator approach due to Schwinger to regain angular-momentum commutation relations.