Twisted spin Sutherland models from quantum Hamiltonian reduction

Details Twisted spin Sutherland models from quantum Hamiltonian reduction Twisted spin Sutherland models from quantum Hamiltonian reduction

2007-11-26

arxiv.org/abs/0711.4015v1

J. Phys. A: Math. Theor. 41 (2008) 194009

Physics

Mathematical Physics

30 pages

Scientific paper

10.1088/1751-8113/41/19/194009

Recent general results on Hamiltonian reductions under polar group actions are applied to study some reductions of the free particle governed by the Laplace-Beltrami operator of a compact, connected, simple Lie group. The reduced systems associated with arbitrary finite dimensional irreducible representations of the group by using the symmetry induced by twisted conjugations are described in detail. These systems generically yield integrable Sutherland type many-body models with spin, which are called twisted spin Sutherland models if the underlying twisted conjugations are built on non-trivial Dynkin diagram automorphisms. The spectra of these models can be calculated, in principle, by solving certain Clebsch-Gordan problems, and the result is presented for the models associated with the symmetric tensorial powers of the defining representation of SU(N).

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