Kahler Normal Coordinate Expansion in Supersymmetric Theories
  The Riemann normal coordinate expansion method is generalized to a Kahler manifold. The Kahler potential and holomorphic coordinate transformations are used to define a normal coordinate preserving the complex structure. The existence of this Kahler normal coordinate is shown explicitly to all orders. The formalism is applied to background field methods in supersymmetric nonlinear sigma models. 
Kiyoshi Higashijima (Osaka Univ.) and Muneto Nitta (Tokyo Inst. Tech.)