Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Boundary massive sine-Gordon model at the free Fermi limit and RG flow
  of Casimir energy   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.

23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an