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Proper time regularization and the QCD chiral phase transition
Cui, Zhu-Fang1,2; Zhang, Jin-Li1; Zong, Hong-Shi1,2,3
2017-04-12
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume7Pages:8
Corresponding AuthorCui, Zhu-Fang(phycui@nju.edu.cn) ; Zong, Hong-Shi(zonghs@nju.edu.cn)
AbstractWe study the QCD chiral phase transition at finite temperature and finite quark chemical potential within the two flavor Nambu-Jona-Lasinio (NJL) model, where a generalization of the proper-time regularization scheme is motivated and implemented. We find that in the chiral limit the whole transition line in the phase diagram is of second order, whereas for finite quark masses a crossover is observed. Moreover, if we take into account the influence of quark condensate to the coupling strength (which also provides a possible way of how the effective coupling varies with temperature and quark chemical potential), it is found that a CEP may appear. These findings differ substantially from other NJL results which use alternative regularization schemes, some explanation and discussion are given at the end. This indicates that the regularization scheme can have a dramatic impact on the study of the QCD phase transition within the NJL model.
DOI10.1038/srep45937
WOS KeywordJONA-LASINIO MODEL ; DYSON-SCHWINGER EQUATIONS ; HADRON-QUARK CROSSOVER ; NJL-MODEL ; VECTOR INTERACTION ; SYMMETRY-BREAKING ; WIGNER SOLUTION ; DIAGRAM ; MATTER ; STARS
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000398969200001
PublisherNATURE PUBLISHING GROUP
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23130
Collection中国科学院紫金山天文台
Corresponding AuthorCui, Zhu-Fang; Zong, Hong-Shi
Affiliation1.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China
2.Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China
3.Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Cui, Zhu-Fang,Zhang, Jin-Li,Zong, Hong-Shi. Proper time regularization and the QCD chiral phase transition[J]. SCIENTIFIC REPORTS,2017,7:8.
APA Cui, Zhu-Fang,Zhang, Jin-Li,&Zong, Hong-Shi.(2017).Proper time regularization and the QCD chiral phase transition.SCIENTIFIC REPORTS,7,8.
MLA Cui, Zhu-Fang,et al."Proper time regularization and the QCD chiral phase transition".SCIENTIFIC REPORTS 7(2017):8.
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