Compressibility of nuclear matter from the chiral soliton model

The compressibility of isospin symmetric nuclear matter is studied in the framework of the in-medium modified chiral soliton model. On one hand, in the mesonic sector, the model is related to pion physics in nuclear matter while on the other hand, in the many baryonic sector, it reproduces the volume term coefficient aV of the semi-empirical binding energy formula. Within our framework, we found an interesting result that aV became density independent in the region 0.35ρ0 ≤ ρ ≤ 1.08ρ0 . The model reproduces well the compression modulus, K ∼ 300 MeV, of isospin symmetric and infinite nuclear matter.