Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1999-09-16
Nucl.Phys. B571 (2000) 607-631
Physics
High Energy Physics
High Energy Physics - Theory
LaTeX, 26 pages
Scientific paper
10.1016/S0550-3213(00)00015-8
We consider a two-dimensional integrable and conformally invariant field theory possessing two Dirac spinors and three scalar fields. The interaction couples bilinear terms in the spinors to exponentials of the scalars. Its integrability properties are based on the sl(2) affine Kac-Moody algebra, and it is a simple example of the so-called conformal affine Toda theories coupled to matter fields. We show, using bosonization techniques, that the classical equivalence between a U(1) Noether current and the topological current holds true at the quantum level, and then leads to a bag model like mechanism for the confinement of the spinor fields inside the solitons. By bosonizing the spinors we show that the theory decouples into a sine-Gordon model and free scalars. We construct the two-soliton solutions and show that their interactions lead to the same time delays as those for the sine-Gordon solitons. The model provides a good laboratory to test duality ideas in the context of the equivalence between the sine-Gordon and Thirring theories.
Blas Achic H. S.
Ferreira Antonio Luis
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