Nucleon Mass Splitting at Finite Isospin Chemical Potential
arXiv:nucl-th/0702032 · doi:10.1088/0256-307X/25/1/016
Abstract
We investigate nucleon mass splitting at finite isospin chemical potential in the frame of two flavor Nambu--Jona-Lasinio model. It is analytically proved that, in the phase with explicit isospin symmetry breaking the proton mass decreases and the neutron mass increases linearly in the isospin chemical potential.
3 pages and no figures