The behavior of the sextic coupling for the scalar field at the intermediate and strong coupling regime

Abstract

We study the behavior of the renormalized sextic coupling at the intermediate and strong coupling regime for the ${\varphi }^4$ theory defined in $d=2$-dimension. We found a good agreement with the results obtained by the field-theoretical renormalization-group in the Ising limit. In this work we use the lattice regularization method.

Comments: 10 pages, 1 figure. To be published in Modern Physics Letters A