On Two-Loop Divergences in 6 D , 𝒩 = (1,1) Supergauge Theory

n approach is developed for calculating the two-loop divergences of effective action in the six-dimensional 𝒩 = (1,1) supersymmetric Yang–Mills model formulated in 6D, 1pt 𝒩 = (1,0) harmonic superspace as a theory of an interacting 𝒩 = (1,0) gauge multiplet and hypermultiplet. Most attention is focused on studying divergences in the hypermultiplet sector. A procedure for calculating the two-loop divergent contribution of a supergraph of type “ ∞ ” into an effective action depending only on the hypermultiplet is developed.