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题名: Proper time regularization at finite quark chemical potential
作者: Zhang, Jin-Li1; Shi, Yuan-Mei1, 2; Xu, Shu-Sheng1, 4; Zong, Hong-Shi1, 3, 4
刊名: MODERN PHYSICS LETTERS A
出版日期: 2016-05-10
卷号: 31, 期号:14
关键词: Proper-time regularization ; chiral phase transition ; crossover
DOI: 10.1142/S0217732316500863
文章类型: Article
英文摘要: In this paper, we use the two-flavor Nambu-Jona-Lasinio (NJL) model to study the quantum chromodynamics (QCD) chiral phase transition. To deal with the ultraviolet (UV) issue, we adopt the popular proper time regularization (PTR), which is commonly used not only for hadron physics but also for the studies with magnetic fields. This regularization scheme can introduce the infrared (IR) cutoff to include quark confinement. We generalize the PTR to zero temperature and finite chemical potential case use a completely new method, and then study the chiral susceptibility, both in the chiral limit case and with finite current quark mass. The chiral phase transition is second-order in mu = 0 and T = 0 and crossover at mu not equal 0 and T = 0. Three sets of parameters are used to make sure that the results do not depend on the parameter choice.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Physics, Nuclear ; Physics, Particles & Fields ; Physics, Mathematical
研究领域[WOS]: Physics
关键词[WOS]: CHIRAL PHASE-TRANSITION ; JONA-LASINIO MODEL ; NJL-MODEL ; DYNAMICAL MODEL ; WIGNER SOLUTION ; MAGNETIC-FIELD ; QCD ; SOLITON ; MASS ; SUPERCONDUCTIVITY
收录类别: SCI
项目资助者: National Natural Science Foundation of China(11275097 ; National Natural Science Foundation of Jiangsu Province of China(BK20130078) ; 11475085 ; 11535005)
语种: 英语
WOS记录号: WOS:000377028300005
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/16227
Appears in Collections:行星科学与深空探测实验室_期刊论文

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作者单位: 1.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China
2.Nanjing Xiaozhuang Univ, Dept Phys & Elect Engn, Nanjing 211171, Jiangsu, Peoples R China
3.Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China
4.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
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