Chinese Physics C, Volume. 44, Issue 1, (2020)
Skyrmion stability at finite isospin chemical potential and temperature *
Wen-Li Yuan1、*, Zhen-Ni Xu1、*, Jin-Li Zhang1、*, and Hong-Shi Zong1,2,3、*
Author Affiliations
1Department of Physics and Jiangsu Key Laboratory for Numerical Simulation of Large Scale Complex Systems, Nanjing Normal University2Department of Physics and Jiangsu Key Laboratory for Numerical Simulation of Large Scale Complex Systems, Nanjing Normal University, Nanjing 210023, China1Department of Physics, Nanjing University1Department of Physics, Nanjing University, Nanjing 210093, China2Joint Center for Particle, Nuclear Physics and Cosmology3Joint Center for Particle, Nuclear Physics and Cosmology, Nanjing 210093, China3State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics4State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, CAS, Beijing 100190, Chinashow less
The skyrmion stability at finite isospin chemical potential is studied using the Skyrme Lagrangian with a finite pion mass . A critical value , above which a stable soliton does not exist, is found. We also explore some properties of the skyrmion as function of , 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 , 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.