Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1996-06-03
Nucl.Phys. B482 (1996) 675-692
Physics
High Energy Physics
High Energy Physics - Theory
Latex file, 20 pages. We add a reference which we have found after completing and submitting our paper
Scientific paper
10.1016/S0550-3213(96)00518-4
We compute the boundary scattering amplitudes of the breathers of the supersymmetric sine-Gordon model using the fusion of the soliton-antisoliton pair scattering with the boundary with a known result of the soliton boundary scattering amplitudes. We also solve the boundary Yang-Baxter equation of the eight-vertex free fermion models to find the boundary reflection matrices. The former result is confirmed by the latter since the bulk $S$-matrices of the breathers can be identified with the trigonometric limit of the Boltzmann weights of the free fermion models. Our dual approach can answer a few quesions on the relationships between the free parameters in the boundary potential and those in the scattering amplitudes.
Ahn Changrim
Koo Wai Ming
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