Skyrmion stability at finite isospin chemical potential and temperature

• 来源期刊: 中国物理C（英文版）
• 年，卷（期）: 2020,（1）
• 页码范围: 105-110
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/1674-1137/44/1/014103

摘要

The skyrmion stability at finite isospin chemical potential μl is studied using the Skyrme Lagrangian with a finite pion mass mπ.A critical valueμlc =√3/2mπ,above which a stable soliton does not exist,is found.We also explore some properties of the skyrmion as function of μl,i.e.,the isoscalar rms radius and the isoscalar magnetic rms radius.Finally,considering the finite temperature effect on the skyrmion mass,we obtain a critical temperature Tc,using the profile function of the skyrmion,above which the skyrmion mass does not have a minimum,which can be interpreted as the occurrence of the deconfinement phase transition.