A continuous Wick rotation for spinor fields and supersymmetry in   Euclidean space
  We obtain a continuous Wick rotation for Dirac, Majorana and Weyl spinors $\psi \to \exp ({1\over 2} \theta \gamma^4 \gamma^5)\psi$ which interpolates between Minkowski and Euclidean field theories. 
Peter van Nieuwenhuizen and Andrew Waldron (ITP S.U.N.Y. Stony Brook)