We present a model for describing nuclear matter at finite density based on quarks interacting with chiral fields, σ and π. The chiral Lagrangian also 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 respect to the Linear-σ model, up to ρ ≈ 3ρ0 for mσ = 1200 MeV.
A hybrid-chiral soliton model with broken scale invariance for nuclear matter
MANTOVANI SARTI, Valentina;DRAGO, Alessandro
2011
Abstract
We present a model for describing nuclear matter at finite density based on quarks interacting with chiral fields, σ and π. The chiral Lagrangian also 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 respect to the Linear-σ model, up to ρ ≈ 3ρ0 for mσ = 1200 MeV.File in questo prodotto:
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