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Closed and open conformal field theories and their anomalies. (English) Zbl 1091.81073

Summary: We describe a formalism allowing a completely mathematical rigorous approach to closed and open conformal field theories with general anomaly. We also propose a way of formalizing modular functors with positive and negative parts, and outline some connections with other topics, in particular elliptic cohomology.

MSC:

81T40 Two-dimensional field theories, conformal field theories, etc. in quantum mechanics
81T50 Anomalies in quantum field theory
46M20 Methods of algebraic topology in functional analysis (cohomology, sheaf and bundle theory, etc.)
58J22 Exotic index theories on manifolds

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