Abstract
An interesting observation was reported by Corrigan–Sasaki that all the frequencies of small oscillations around equilibrium are 'quantized' for Calogero and Sutherland (CS) systems, typical integrable multi-particle dynamics. We present an analytic proof by applying recent results of Loris–Sasaki. Explicit forms of 'classical' and quantum eigenfunctions are presented for CS systems based on any root system.
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