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University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > Poisson-Lie interpretation of a case of the Ruijsenaars duality

## Poisson-Lie interpretation of a case of the Ruijsenaars dualityAdd to your list(s) Download to your calendar using vCal - Feher, L (KFKI)
- Tuesday 24 March 2009, 15:30-16:30
- Seminar Room 1 Newton Institute.
If you have a question about this talk, please contact Mustapha Amrani. Discrete Integrable Systems By performing a suitable symplectic reduction of the standard Heisenberg double of the group U(n), we give a geometric interpretation of the duality between two real forms of the complex trigonometric Ruijsenaars-Schneider model. The reduced phase space is realized in terms of two global cross sections in the inverse image of the moment map value associated with the reduction. Two natural commutative families of U(n) Poisson-Lie symmetric Hamiltonian flows on the double descend upon reduction to the respective commuting flows of the mutually dual models. The reduced flows are automatically complete, and reproduce the original direct completion of the dual flows due to Ruijsenaars. The talk is based on a forthcoming joint paper with C. Klimcik, which continues arXiv:0809.1509 and arXiv:0901.1983, and will also include a brief discussion of the quantum mechanical version of the construction outlined above. This talk is part of the Isaac Newton Institute Seminar Series series. ## This talk is included in these lists:- All CMS events
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