1/M correction to quenched QCD with non-zero baryon density

Introduction In Fig. 1 we sketch tentative features of the QCD phase diagram in the κ, μ, T space. Since a general description is missing, one may try to concentrate on special situations, such as the “quenched” limit [1] (see below), represented by the thick vertical dashed line at infinite μ in the κ = 0 plane. For a more physical situation we consider a vertical plane at small but non-zero κ, then, e.g., a possible transition would appear at μc(κ, T ) < ∞. Here we present a first attempt to describe phenomena away from the quenched limit.