Nuclear matter to strange matter transition in holographic QCD

Abstract

We construct a simple holographic QCD model to study nuclear matter to strange matter transition. The interaction of dense medium and hadrons is taken care of by imposing the force balancing condition for stable D4/D6/D6 configuration. By considering the intermediate and light flavor branes interacting with baryon vertex, which is homogeneously distributed along R-3 space, and by requesting the energy minimization, we find that there is a well defined transition density as a function of current quark mass. We also find that as density goes up very high, intermediate (or heavy) and light quarks populate equally. Since these are expected from the Pauli exclusion principle, we speculate that the effect of the Pauli exclusion principle in the field theory is realized by the repulsive force between the U(1) charges and the dynamics of D-branes.