82 citations · 169 across the 15 of their papers we have counts for
17 papers
Mapping class group representations from Drinfeld doubles of finite groups
Jens Fjelstad, Jürgen Fuchs
We investigate representations of mapping class groups of surfaces that arise from the untwisted Drinfeld double of a finite group G, focusing on surfaces without marked points or…
Partition functions, mapping class groups and Drinfeld doubles
Jens Fjelstad, Jurgen Fuchs, Christoph Schweigert +1
Higher genus partition functions of two-dimensional conformal field theories have to be invariants under linear actions of mapping class groups. We illustrate recent results [4,6]…
RCFT with defects: Factorization and fundamental world sheets
Jens Fjelstad, Jurgen Fuchs, Carl Stigner
It is known that for any full rational conformal field theory, the correlation functions that are obtained by the TFT construction satisfy all locality, modular invariance and fact…
New symmetries of the chiral Potts model
Jens Fjelstad, Teresia Mansson
In this paper a hithertho unknown symmetry of the three-state chiral Potts model is found consisting of two coupled Temperley-Lieb algebras. From these we can construct new superin…
On duality and extended chiral symmetry in the SL(2,R) WZW model
Jens Fjelstad
Two chiral aspects of the SL(2,R) WZW model in an operator formalism are investigated. First, the meaning of duality, or conjugation, of primary fields is clarified. On a class of…
Modular invariant partition functions for non-compact G/Ad(H) models
Jonas Bjornsson, Jens Fjelstad
We propose a spectrum for a class of gauged non-compact G/Ad(H) WZNW models, including spectrally flowed images of highest, lowest, and mixed extremal weight modules. These are com…