Temperature Dependence of the Superfluid Density in a Noncentrosymmetric   Superconductor
  For a noncentrosymmetric superconductor such as CePt3Si, we consider a Cooper pairing model with a two-component order parameter composed of spin-singlet and spin-triplet pairing components.   We calculate the superfluid density tensor in the clean limit on the basis of the quasiclassical theory of superconductivity.   We demonstrate that such a pairing model accounts for an experimentally observed feature of the temperature dependence of the London penetration depth in CePt3Si, i.e., line-node-gap behavior at low temperatures. 
N. Hayashi, K. Wakabayashi, P. A. Frigeri, M. Sigrist