Low energy theory for 2 flavors at high density QCD - art. no. 094004

We construct the effective Lagrangian describing the low energy excitations for quantum chromodynamics with two flavors at high density. The non-linea r realization framework is employed to properly construct the low energy ef fective theory. The light degrees of freedom, as required by 't Hooft anoma ly conditions, contain massless fermions which we properly include in the e ffective Lagrangian. We also provide a discussion of the linearly realized Lagrangian.