arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1102.1860hep-thcond-mat.stat-mechhep-ph
收藏

二维四费米子相互作用模型中不同粒子凝聚体phase diagram的粒子尺寸效应

Finite-size effects on the phase diagram of difermion condensates in two-dimensional four-fermion interaction models

L. M. Abreu, A. P. C. Malbouisson, J. M. C. Malbouisson

摘要:

在二维大$N$ Nambu-Jona-Lasinio模型框架下,研究了有限温度和密度下有限尺寸效应对手征凝聚体和差费米子凝聚体相结构的影响.我们考虑到尺寸依赖的影响,利用$zeta$ -功能和紧致化的方法。然后在平均场近似下导出了手征凝聚相和差费米子凝聚相的热力学势和能隙方程。考虑空间坐标的反周期边界条件,得到了分离不同相的尺寸依赖的临界线。

英文摘要:

We investigate finite-size effects on the phase structure of chiral and difermion condensates at finite temperature and density in the framework of the two-dimensional large-$N$ Nambu-Jona-Lasinio model. We take into account size-dependent effects by making use of $zeta$-function and compactification methods. The thermodynamic potential and the gap equations for the chiral and difermion condensed phases are then derived in the mean-field approximation. Size-dependent critical lines separating the different phases are obtained considering anti-periodic boundary conditions for the spatial coordinate.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑