Boundary massive sine-Gordon model at the free Fermi limit and RG flow of Casimir energy
Abstract
Description
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.
Latex 20 pages, 23 figures (23 eps files)
Latex 20 pages, 23 figures (23 eps files)