Temperature and density effects on the nucleon mass splitting
H. R. ChristiansenDepartamento de Física, Universidad Nacional de La Plata C.C. 67, (1900) La Plata, ArgentinaL.N. EpeleDepartamento de Física, Universidad Nacional de La Plata C.C. 67, (1900) La Plata, ArgentinaH. FanchiottiDepartamento de Física, Universidad Nacional de La Plata C.C. 67, (1900) La Plata, ArgentinaC. A. Garcı́a CanalDepartamento de Física, Universidad Nacional de La Plata C.C. 67, (1900) La Plata, Argentina
1996en
ABI
Abstract
The finite temperature and finite density dependence of the neutron-proton mass difference is analyzed in a purely hadronic framework where the \ensuremath{\rho}-\ensuremath{\omega} mixing is crucial for this isospin symmetry breakdown. The problem is handled within thermofield dynamics. The present results, consistent with partial chiral and charge symmetry restoration, improve the experimental data fit for the energy difference between mirror nuclei. \textcopyright{} 1996 The American Physical Society.
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Cited by 20 references