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hep-th2004★ 1 cited
Conformal Field Theory and Torsion Elements of the Bloch Group
Werner Nahm
We argue that rational conformally invariant quantum field theories in two dimensions are closely related to torsion elements of the algebraic K-theory group K_3(C). If such a theo…
hep-th1998
The associative algebras of conformal field theory
David Brungs, Werner Nahm
Modulo the ideal generated by the derivative fields, the normal ordered product of holomorphic fields in two-dimensional conformal field theory yields a commutative and associative…
hep-th1996
On the Seiberg-Witten Approach to electric-magnetic Duality
Werner Nahm
Electric-magnetic duality allows to calculate the central charges of N=2 supersymmetric theories with massless hypermultiplets as derivatives of simple modular forms. The procedure…