The Ising Transition in the double-frequency sine-Gordon model
arXiv:cond-mat/0104321
Abstract
In the present paper we utilize the renormalization group(RG) technique to analyse the Ising critical behavior in the double frequency sine-Gordon model. The one-loop RG equations obtained show unambiguously that there exist two Ising critical points besides the trivial Gaussian fixed point. The topology of the RG flows is obtained as well.
6 pages, 1 figure