Dynamical chiral symmetry breaking in the NJL model with a constant external magnetic field
文献类型：期刊论文
| 作者 | Shi, S; Yang, YC; Xia, YH; Cui, ZF; Liu, XJ; Zong, HS |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2015 |
| 卷号 | 91期号:3页码:36006 |
| 通讯作者 | Shi, S (reprint author), Nanjing Univ, Inst Acoust, Key Lab Modern Acoust, MOE, Nanjing 210093, Jiangsu, Peoples R China. |
| 英文摘要 | In this paper, we develop a new method that is different from the Schwinger proper time method to deduce the fermion propagator with a constant external magnetic field. In the NJL model, we use this method to find the gap equation at zero and nonzero temperature and give the numerical results and phase diagram between the magnetic field and temperature. Additionally, we introduce the current mass to study the susceptibilities because there is a new parameter (the strength of the external magnetic field) in this problem. Corresponding to this new parameter, we define a new susceptibility X-B to compare with the other two susceptibilities Xc (chiral susceptibility) and X-T (thermal susceptibility). All three susceptibilities show that when the current mass is not zero, the phase transition is a crossover, while for comparison, in the chiral limit, the susceptibilities show a second order phase transition. Last, we give the critical coefficients of different susceptibilities in the chiral limit. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 类目[WOS] | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 关键词[WOS] | QUANTUM CHROMODYNAMICS ; VACUUM SUSCEPTIBILITY ; TEMPERATURE ; VIOLATION ; MATTER |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/21085]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 推荐引用方式 GB/T 7714 | Shi, S,Yang, YC,Xia, YH,et al. Dynamical chiral symmetry breaking in the NJL model with a constant external magnetic field[J]. PHYSICAL REVIEW D,2015,91(3):36006. |
| APA | Shi, S,Yang, YC,Xia, YH,Cui, ZF,Liu, XJ,&Zong, HS.(2015).Dynamical chiral symmetry breaking in the NJL model with a constant external magnetic field.PHYSICAL REVIEW D,91(3),36006. |
| MLA | Shi, S,et al."Dynamical chiral symmetry breaking in the NJL model with a constant external magnetic field".PHYSICAL REVIEW D 91.3(2015):36006. |
入库方式： OAI收割
来源：理论物理研究所
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