Kempf-Ness type theorems and Nahm equations
arXiv:1809.04518 · doi:10.1016/j.geomphys.2018.11.003
Abstract
We prove a version of the affine Kempf-Ness theorem for non-algebraic symplectic structures and shifted moment maps, and use it to describe hyperkahler quotients of T*G, where G is a complex reductive group.
25 pages. v2: The Kahler potential on T*G was changed to reflect a correction in arXiv:1709.09126