Kramers-Wannier symmetry and strong-weak-coupling duality in the two-dimensional ${\Phi }^4$ field model

Boris N. Shalaev

It is found that the exact beta-function $\beta (g)$ of the continuous 2D $g{\Phi }^4$ model possesses two types of dual symmetries, these being the Kramers-Wannier (KW) duality symmetry an…