Pion string evolving in a thermal bath

作者：Lu, Fan; Chen, Qichang; Mao, Hong^*

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2015, 92(8): 085036.

DOI：10.1103/PhysRevD.92.085036

• CHIRAL PHASE-TRANSITION
• LINEAR SIGMA-MODEL
• FREEZE-OUT
• SYMMETRY
• TEMPERATURE
• COLLISIONS
• PLASMA

By using the symmetry improved Cornwall-Jackiw-Tomboulis effective formalism, we study a pion string of the O(4) linear sigma model at finite temperature in chiral limit. In terms of the Kibble-Zurek mechanism we reconsider the production and evolution of the pion string in a thermal bath. Finally, we estimate the pion string density and its possible signal during the chiral phase transition.

• 出版日期2015-10-22
• 单位杭州师范大学