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Boundary spectrum in the sine-Gordon model with Dirichlet boundary conditions

Peter Mattsson·Patrick Dorey
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Abstract

We find the spectrum of boundary bound states for the sine-Gordon model with Dirichlet boundary conditions, closing the bootstrap and providing a complete description of all the poles in the boundary reflection factors. The boundary Coleman-Thun mechanism plays an important role in the analysis. Two basic lemmas are introduced which should hold for any 1+1-dimensional boundary field theory, allowing the general method to be applied to other models.

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Peter Mattsson, Patrick Dorey. 2001-11-28. Boundary spectrum in the sine-Gordon model with Dirichlet boundary conditions. https://doi.org/10.1088/0305-4470%2F33%2F49%2F304

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