2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/51835A derivative expansion of the effective average action beyond first order yields renormalization group functional flow equations which are used for the computation of critical exponents of the Ising universality class. The critical exponent nu in D=3 is consistent with high-precision methods.4 pages, 1 tableHigh Energy Physics - Theorytext