Universal effective action for O(n)-symmetric λϕ^4 model from renormalization group

A. I. Sokolov, E. V. Orlov, V. A. Ul'kov +1

The RG expansions for renormalized coupling constants g_6 and g_8 of the 3D n-vector model are calculated in the 4-loop and 3-loop approximations respectively. Resummation of the R…