Form Factors of the Homogeneous Sine-Gordon models

Details Form Factors of the Homogeneous Sine-Gordon models Form Factors of the Homogeneous Sine-Gordon models

2000-04-12

arxiv.org/abs/hep-th/0004089v1

Phys.Lett. B484 (2000) 167-176

Physics

High Energy Physics

High Energy Physics - Theory

13 pages Latex

Scientific paper

10.1016/S0370-2693(00)00565-7

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.

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