%0 Journal Article
%T Lattice QCD with mismatched Fermi surfaces
%A Arata Yamamoto
%J Physics
%D 2014
%I arXiv
%R 10.1103/PhysRevLett.112.162002
%X We study two flavor fermions with mismatched chemical potentials in quenched lattice QCD. We first consider a large isospin chemical potential, where a charged pion is condensed, and then introduce a small mismatch between the chemical potentials of the up quark and the anti-down quark. We find that the homogeneous pion condensate is destroyed by the mismatch of the chemical potentials. We also find that the two-point correlation function shows spatial oscillation, which indicates an inhomogeneous ground state, although it is not massless but massive in the present simulation setup.
%U http://arxiv.org/abs/1402.3049v2