Orthosymplectic Superinstanton Counting and Brane Dynamics

We extend the study of superinstantons presented in 1905.01513 to include orthosymplectic supergroup gauge theories, $B_{n_0|n_1}$, $C_n$, and $D_{n_0|n_1}$. We utilize equivariant localization to obtain the LMNS contour integral formula for the instanton partition function, and we investigate the Seiberg--Witten geometries associated with these theories. We also explore the brane configurations involving positive and negative branes together with O-planes that realize the orthosymplectic supergroup theories.