2007/09/17 by G. Chanfray, M. Ericson, M. Ericsson +2
Physics and Astronomy · #Asymmetry #Chiral anomaly #Chiral perturbation theory #Chiral symmetry #Chiral symmetry breaking #Coupling constant #Effective field theory #High-Energy Particle Collisions Research #Lattice QCD #Lattice field theory #Nuclear matter #Nucleon #Particle physics #Particle physics theoretical and experimental studies #Physics #Pion #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum electrodynamics #Quark #nucl-th
paper · pdf · doi:10.1140/epjst/e2008-00617-y
published as Eur.Phys.J.ST 156:199-206,2008 · Lecture given by G. Chanfray at the Theoretical Nuclear Physics School, 8-17 may 2007, Les Houches, France
arxiv created 2007/09/17 · openalex publication_date 2008/04/01 · arxiv updated 2011/07/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We discuss the possible influence of fundamental QCD properties such as spontaneous chiral symmetry breaking and nucleon substructure on nuclear matter properties. We propose a chiral version of the relativistic σ-ω model in which the attractive background scalar field is associated with the chiral invariant field governing the radial fluctuations of the quark condensate. Nuclear matter stability is ensured once the scalar response of the nucleon depending on the quark confinement mechanism is properly incorporated. The needed parameters are estimated from lattice results and a satisfactory description of bulk properties follows, the only really free parameter being the ωNN coupling constant. Pion loops can be also incorporated to obtain in a consistent way the finite density chiral susceptibilities. A good description of the asymmetry energy is obtained once the full rho meson exchange and Fock terms are included.