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TFT construction of RCFT correlators V: Proof of modular invariance and factorisation

MPS-Authors

Fuchs,  Jürgen
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

Runkel,  Ingo
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Fjelstad, J., Fuchs, J., Runkel, I., & Schweigert, C. (2006). TFT construction of RCFT correlators V: Proof of modular invariance and factorisation. Theory and Applications of Categories, 16, 342-433.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-4B0C-A
Abstract
The correlators of two-dimensional rational conformal field theories that are obtained in the TFT construction of [FRSI,FRSII,FRSIV] are shown to be invariant under the action of the relative modular group and to obey bulk and boundary factorisation constraints. We present results both for conformal field theories defined on oriented surfaces and for theories defined on unoriented surfaces. In the latter case, in particular the so-called cross cap constraint is included.