Microscopic eigenvalue correlations in QCD with imaginary isospin   chemical potential
  We consider the chiral limit of QCD subjected to an imaginary isospin chemical potential. In the epsilon-regime of the theory we can perform precise analytical calculations based on the zero-momentum Goldstone modes in the low-energy effective theory. We present results for the spectral correlation functions of the associated Dirac operators. 
P. H. Damgaard, U. M. Heller, K. Splittorff, B. Svetitsky, D. Toublan