Quantum scattering of charged solitons in the complex sine-Gordon model

Details Quantum scattering of charged solitons in the complex sine-Gordon model Quantum scattering of charged solitons in the complex sine-Gordon model

1994-10-19

arxiv.org/abs/hep-th/9410140v1

Nucl.Phys.B440:215-236,1995

Physics

High Energy Physics

High Energy Physics - Theory

SWAT-46

Scientific paper

10.1016/0550-3213(95)00074-3

The scattering of charged solitons in the complex sine-Gordon field theory is investigated. An exact factorizable S-matrix for the theory is proposed when the renormalized coupling constant takes the values $\lambda^{2}_{R}=4\pi/k$ for any integer $k>1$: the minimal S-matrix associated with the Lie algebra $a_{k-1}$. It is shown that the proposed S-matrix reproduces the leading semiclassical behaviour of all amplitudes in the theory and is the minimal S-matrix which is consistent with the semiclassical spectrum of the model. The results are completely consistent with the description of the complex sine-Gordon theory as the SU$(2)/{\rm U}(1)$ coset model at level $k$ perturbed by its first thermal operator.

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