On Chern-Simons theory with complex gauge group:
Tudor Dimofte, Sergei Gukov, Jonatan Lenells, Don Zagier, Exact Results for Perturbative Chern-Simons Theory with Complex Gauge Group (arXiv:0903.2472)
Tudor Dimofte, Perturbative and nonperturbative aspects of complex Chern-Simons Theory, Journal of Physics A: Mathematical and Theoretical, Volume 50, Number 44 (arXiv:1608.02961)
On Coulomb branch singularities in D=3 N=4 super Yang-Mills theory:
Mathew Bullimore, Tudor Dimofte, Davide Gaiotto, The Coulomb Branch of 3d $\mathcal{N}=4$ Theories, Commun. Math. Phys. (2017) 354: 671 (arXiv:1503.04817)
(relation to Nahm's equations and the moduli space of monopoles)
Discussion of topological quantum field theory with an eye towards supersymmetric field theory, in terms of the ordinary homology of configuration spaces of points (see also at correlators as differential forms on configuration spaces of points):