Elsevier

Physics Reports

Volume 94, Issue 6, March 1983, Pages 313-404
Physics Reports

Quantum integrable systems related to lie algebras

https://doi.org/10.1016/0370-1573(83)90018-2Get rights and content

Abstract

Some quantum integrable finite-dimensional systems related to Lie algebras are considered. This review continues the previous review of the same authors [83] devoted to the classical aspects of these systems. The dynamics of some of these systems is closely related to free motion in symmetric spaces. Using this connection with the theory of symmetric spaces some results such as the forms of spectra, wave functions, S-matrices, quantum integrals of motion are derived. In specific cases the considered systems describe the one-dimensional n-body systems interacting pairwise via potentials g2 v(q) of the following 5 types: vI(q) = q−2, vII(q) = sinh−2 q, vIII(q) = sin−2 q, vIV(q) = P(q), vV(q) = q−2 + ω2q2. Here P(q) is the Weierstrass function, so that the first three cases are merely subcases of the fourth. The system characterized by the Toda nearest-neighbour potential exp(qjqj+ 1) is moreover considered.

This review presents from a general and universal point of view results obtained mainly over the past fifteen years. Besides, it contains some new results both of physical and mathematical interest.

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