A chiral quark-soliton model with broken scale invariance for nuclear matter.

We present a model for describing nuclear matter at finite density based on quarks interacting with chiral fields σ and π and with vector mesons introduced as massive gauge fields. The chiral Lagrangian includes a logarithmic potential, associated with the breaking of scale invariance. We provide results for the soliton in vacuum and at finite density, using the Wigner-Seitz approximation. We show that the model can reach higher densities with respect to the linear σ model, and that the introduction of vector mesons allows us to obtain saturation.