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Neutral and charged scalar mesons, pseudoscalar mesons, and diquarks in magnetic fields
Liu H(刘好); Wang XY(王昕杨); Huang M(黄梅); Liu, H; Wang, XY; Yu, L; Huang, M
2018
Source PublicationPHYSICAL REVIEW D
ISSN2470-0010
EISSN2470-0029
Volume97Issue:7Pages:76008
SubtypeArticle
AbstractWe investigate both (pseudo) scalar mesons and diquarks in the presence of external magnetic field in the framework of the two-flavored Nambu-Jona-Lasinio (NJL) model, where mesons and diquarks are constructed by infinite sum of quark-loop chains by using random phase approximation. The polarization function of the quark-loop is calculated to the leading order of 1/N-c expansion by taking the quark propagator in the Landau level representation. We systematically investigate the masses behaviors of scalar sigma meson, neutral and charged pions as well as the scalar diquarks, with respect to the magnetic field strength at finite temperature and chemical potential. It is shown that the numerical results of both neutral and charged pions are consistent with the lattice QCD simulations. The mass of the charge neutral pion keeps almost a constant under the magnetic field, which is preserved by the remnant symmetry of QCD x QED in the vacuum. The mass of the charge neutral scalar sigma is around two times quark mass and increases with the magnetic field due to the magnetic catalysis effect, which is an typical example showing that the polarized internal quark structure cannot be neglected when we consider the meson properties under magnetic field. For the charged particles, the one quark-antiquark loop contribution to the charged pi(+/-) increases essentially with the increase of magnetic fields due to the magnetic catalysis of the polarized quarks. However, the one quark-quark loop contribution to the scalar diquark mass is negative comparing with the point-particle result and the loop effect is small.
DOI10.1103/PhysRevD.97.076008
WOS KeywordJONA-LASINIO MODEL ; HEAVY-ION COLLISIONS ; QUANTUM CHROMODYNAMICS ; ELECTROMAGNETIC-FIELD ; FINITE-TEMPERATURE ; PHASE-TRANSITIONS ; DYNAMICAL MODEL ; SUPERCONDUCTIVITY ; SYMMETRY ; LATTICE
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000430163500009
ADS Bibcode2018PhRvD..97g6008L
AXRIV CODE1801
inspireid1646700
Citation statistics
Cited Times:24 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/285832
Collection理论物理室
粒子天体物理中心
Corresponding AuthorLiu H(刘好)
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Corresponding Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Liu H,Wang XY,Huang M,et al. Neutral and charged scalar mesons, pseudoscalar mesons, and diquarks in magnetic fields[J]. PHYSICAL REVIEW D,2018,97(7):76008.
APA 刘好.,王昕杨.,黄梅.,Liu, H.,Wang, XY.,...&Huang, M.(2018).Neutral and charged scalar mesons, pseudoscalar mesons, and diquarks in magnetic fields.PHYSICAL REVIEW D,97(7),76008.
MLA 刘好,et al."Neutral and charged scalar mesons, pseudoscalar mesons, and diquarks in magnetic fields".PHYSICAL REVIEW D 97.7(2018):76008.
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