Angular Momentum Mixing in Crystalline Color Superconductivity
  In crystalline color superconductivity, quark pairs form at non-zero total momentum. This crystalline order potentially enlarges the domain of color superconductivity in cold dense quark matter. We present a perturbative calculation of the parameters governing the crystalline phase and show that this is indeed the case. Nevertheless, the enhancement is modest, and to lowest order is independent of the strength of the color interaction. 
Ioannis Giannakis, James T. Liu and Hai-cang Ren