Boundary massive sine-Gordon model at the free Fermi limit and RG flow of Casimir energy

Details Boundary massive sine-Gordon model at the free Fermi limit and RG flow of Casimir energy Boundary massive sine-Gordon model at the free Fermi limit and RG flow of Casimir energy

2004-05-19

arxiv.org/abs/hep-th/0405162v1

Physics

High Energy Physics

High Energy Physics - Theory

Latex 20 pages, 23 figures (23 eps files)

Scientific paper

RG flow of central charge $c_{\rm eff}$ is investigated for the two boundary sine-Gordon model at the free Fermi limit. Thermodynamic Bethe ansatz approach is used to check the non-monotonic decreasing properties of $c_{\rm eff}$, its resonance, and the modification of $c_{\rm eff}$ due to the mismatch of the periodicity of a Lagrangian parameter and that of the boundary scattering parameter. The detailed analysis uses the singularity structure of the system on the complex rapidity plane.

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