Form Factors of the Homogeneous Sine-Gordon models

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.

13 pages Latex

References in corpus (3)

• Thermodynamic Bethe Ansatz of the Homogeneous Sine-Gordon models
• Integrable Quantum Field Theories with Unstable Particles
• Colour valued Scattering Matrices

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