Abstract
The sheaves of conformal blocks and conformal coinvariants of the twisted WZW model have a factorisation property and are locally free even at the boundary of the moduli space, where the elliptic KZ equations and the Baxter-Belavin elliptic r-matrix degenerate to the trigonometric KZ equations and the trigonometric r-matrix, respectively. Etingof’s construction of the elliptic KZ equations is geometrically interpreted.
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Takebe, T. (2005). Trigonometric Degeneration and Orbifold Wess-Zumino-Witten Model. II. In: Kulish, P.P., Manojlovich, N., Samtleben, H. (eds) Infinite Dimensional Algebras and Quantum Integrable Systems. Progress in Mathematics, vol 237. Birkhäuser Basel. https://doi.org/10.1007/3-7643-7341-5_7
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