Form factors of the homogeneous sine-Gordon models

Castro-Alvaredo, O., Fring, A. & Korff, C. (2000). Form factors of the homogeneous sine-Gordon models. Physics Letters B, 484(1-2), pp. 167-176. doi: 10.1016/S0370-2693(00)00565-7

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Abstract

We provide general determinant formulae for all n-particle form factors related to the trace of the energy momentum tensor and the analogue of the order and disorder operator in the $SU(3)_2$-homogeneous Sine-Gordon model. We employ the form factors related to the trace of the energy momentum tensor in the application of the c-theorem and find perfect agreement with the physical picture recently obtained by means of the thermodynamic Bethe ansatz. For finite resonance parameter we recover the expected WZNW-coset central charge and for infinite resonance parameter the theory decouples into two free fermions.

Item Type: Article
Additional Information: ID: hep-th/0004089.
Subjects: Q Science > QC Physics
Divisions: School of Engineering & Mathematical Sciences > Department of Mathematical Science
URI: http://openaccess.city.ac.uk/id/eprint/726

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