Friday, April 5, 2013

1304.1372 (Ctirad Klimcik)

Quasi-Hamiltonian bookkeeping of WZNW defects    [PDF]

Ctirad Klimcik
We interpret the chiral WZNW model with general monodromy as an infinite dimensional quasi-Hamiltonian dynamical system. This interpretation permits to explain the totality of complicated cross-terms in the symplectic structures of various WZNW defects solely in terms of the single concept of the quasi-Hamiltonian fusion. Translated from the WZNW language into that of the moduli space of flat connections on Riemann surfaces, our result gives a compact and transparent characterisation of the symplectic structure of the moduli space of flat connections on a surface with k handles, n boundaries and m Wilson lines.
View original: http://arxiv.org/abs/1304.1372

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