Bose–Einstein condensation in a linear sigma model at large N approximation
Bose–Einstein condensation in a linear sigma model at large N approximation
复制标题
DOI：
10.1088/0954-3899/34/12/016
复制
发表时间：
2007-02
期刊：
影响因子：
--
通讯作者：
Song Shu;Jia-rong Li
中科院分区：
文献类型：
--
作者：
Song Shu;Jia-rong Li
在O（N）线性σ模型的框架下研究了带电π介子的BEC。利用Cornwall-Jackiw-Tomboulis形式，导出了有限温度和有限密度下介子有效质量的差距方程.在大N近似下讨论了BEC的手征极限和非手征极限。
The BEC of charged pions is investigated in the framework of an O(N) linear sigma model. By using Cornwall–Jackiw–Tomboulis formalism, we have derived the gap equations for the effective masses of the mesons at finite temperature and finite isospin density. The BEC is discussed in chiral limit and non-chiral limit at a large N approximation.