Kaon Condensation in the Bound-State Approach to the Skyrme Model
  We explore kaon condensation using the bound-state approach to the Skyrme model on a 3-sphere. The condensation occurs when the energy required to produce a $K^-$ falls below the electron fermi level. This happens at the baryon number density on the order of 3--4 times nuclear density. 
Karl M. Westerberg