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We study the behavior of the renormalized sextic coupling at the intermediateand strong coupling regime for the $\phi^4 $ theory defined in $d=2$-dimension.We found a good agreement with the results obtained by the field-theoreticalrenormalization-group in the Ising limit. In this work we use the latticeregularization method.Comment: 10 pages, 1 figure. To be published in Modern Physics Letters

THE BEHAVIOR OF THE SEXTIC COUPLING FOR THE SCALAR FIELD AT THE INTERMEDIATE AND STRONG COUPLING REGIME