Nucleon Mass Splitting at Finite Isospin Chemical Potential

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2008,（1）
• 页码范围: 55-57
• 页数: 3页
• 语种: 英文

摘要

We investigate nucleon mass splitting at finite isospin chemical potential in the frame of the two-flavour NambuJona-Lasinio model.It is analytically proven that in the phase with explicit isospin symmetry breaking,the proton mass decreases and the neutron mass increases linearly in the isospin chemical potential.