Excited states in some simple perturbed conformal field theories
Patrick Dorey, Roberto Tateo
Abstract
The method of analytic continuation is used to find exact integral equations for a selection of finite-volume energy levels for the non-unitary minimal models M2,2N+3 perturbed by their φ13 operators. The N=2 case is studied in particular detail. Along the way, we find a number of general results which should be relevant to the study of excited states in other models.
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