Journal ArticleDOI
Large-N phase-integral approximation for SU(1,1) coherent states
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This article is published in Physical Review D.The article was published on 1983-10-15. It has received 10 citations till now. The article focuses on the topics: Coherent states & Phase (waves).read more
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Large-N expansions in quantum mechanics, atomic physics and some O(N) invariant systems
TL;DR: In this paper, a review of large-N expansion methods is presented, including perturbed oscillator methods, Riccati equation methods, pseudospin methods and collective field methods.
Journal ArticleDOI
Abelian scalar theory at large global charge
TL;DR: In this paper, the authors elaborate on Abelian complex scalar models, which are dictated by natural actions at fixed and large global U(1) charge in an arbitrary number of dimensions.
Journal ArticleDOI
Nonlinear pseudospin dynamics on a noncompact manifold.
D. M. Jezek,E. S. Hernandez +1 more
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A large-N phase integral approximation of Coulomb-type systems using SO(2,1) coherent states
C C Gerry,J B Togeas +1 more
TL;DR: In this article, a phase integral approximation based on the notion that large N is a semiclassical limit is presented for spherically symmetric systems of the Coulomb type. But it is only applicable to the case of SO(2,1) coherent states.