Trigonometric Solutions of WDVV Equations and Generalized Calogero-Moser-Sutherland Systems

Details Trigonometric Solutions of WDVV Equations and Generalized Calogero-Moser-Sutherland Systems Trigonometric Solutions of WDVV Equations and Generalized Calogero-Moser-Sutherland Systems

2008-02-04

arxiv.org/abs/0802.0532v3

SIGMA 5 (2009), 088, 10 pages

Physics

Mathematical Physics

Scientific paper

10.3842/SIGMA.2009.088

We consider trigonometric solutions of WDVV equations and derive geometric conditions when a collection of vectors with multiplicities determines such a solution. We incorporate these conditions into the notion of trigonometric Veselov system ($\vee$-system) and we determine all trigonometric $\vee$-systems with up to five vectors. We show that generalized Calogero-Moser-Sutherland operator admits a factorized eigenfunction if and only if it corresponds to the trigonometric $\vee$-system; this inverts a one-way implication observed by Veselov for the rational solutions.

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