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.

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

DRAGO, Alessandro;MANTOVANI SARTI, Valentina
2012

Abstract

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.
Drago, Alessandro; MANTOVANI SARTI, Valentina
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/1690743
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