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JOURNALS // Moscow Mathematical Journal // Archive

Mosc. Math. J., 2011 Volume 11, Number 3, Pages 561–581 (Mi mmj433)

This article is cited in 2 papers

Conformal blocks and equivariant cohomology

Richárd Rimányia, Vadim Schechtmanb, Alexander Varchenkoa

a Department of Mathematics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
b Institute de Mathématique de Toulouse, Univesité Paul Sabatier, Toulouse, France

Abstract: In this paper we show that the conformal blocks constructed in the previous article by the first and the third author may be described as certain integrals in equivariant cohomology. When the bundles of conformal blocks have rank one, this construction may be compared with the old integral formulas of the second and the third author. The proportionality coefficients are some Selberg type integrals which are computed. Finally, a geometric construction of the tensor products of vector representations of the Lie algebra $\mathfrak{gl}(m)$ is proposed.

Key words and phrases: Wess–Zumino–Witten model, Knizhnik–Zamolodchikov equations, equivariant cohomology, Selberg integrals, Kac–Moody Lie algebras.

MSC: 81T40, 55N91, 17B67

Received: September 3, 2010

Language: English



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