Neutral and charged scalar mesons, pseudoscalar mesons, and diquarks in magnetic fields
文献类型:期刊论文
作者 | Liu, Hao1,2,3; Wang, Xinyang1; Yu, Lang4,5; Huang, Mei1,2,6 |
刊名 | Physical review d |
出版日期 | 2018-04-17 |
卷号 | 97期号:7页码:12 |
ISSN号 | 2470-0010 |
DOI | 10.1103/physrevd.97.076008 |
通讯作者 | Liu, hao() |
英文摘要 | We 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. |
WOS关键词 | JONA-LASINIO MODEL ; HEAVY-ION COLLISIONS ; QUANTUM CHROMODYNAMICS ; ELECTROMAGNETIC-FIELD ; FINITE-TEMPERATURE ; PHASE-TRANSITIONS ; DYNAMICAL MODEL ; SUPERCONDUCTIVITY ; SYMMETRY ; LATTICE |
WOS研究方向 | Astronomy & Astrophysics ; Physics |
WOS类目 | Astronomy & Astrophysics ; Physics, Particles & Fields |
语种 | 英语 |
出版者 | AMER PHYSICAL SOC |
WOS记录号 | WOS:000430163500009 |
URI标识 | http://www.irgrid.ac.cn/handle/1471x/2178110 |
专题 | 高能物理研究所 |
通讯作者 | Liu, Hao |
作者单位 | 1.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 2.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100039, Peoples R China 3.Jinyuan Senior High Sch, Shanghai 200333, Peoples R China 4.Jilin Univ, Ctr Theoret Phys, Changchun 130012, Jilin, Peoples R China 5.Jilin Univ, Coll Phys, Changchun 130012, Jilin, Peoples R China 6.Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Liu, Hao,Wang, Xinyang,Yu, Lang,et al. Neutral and charged scalar mesons, pseudoscalar mesons, and diquarks in magnetic fields[J]. Physical review d,2018,97(7):12. |
APA | Liu, Hao,Wang, Xinyang,Yu, Lang,&Huang, Mei.(2018).Neutral and charged scalar mesons, pseudoscalar mesons, and diquarks in magnetic fields.Physical review d,97(7),12. |
MLA | Liu, Hao,et al."Neutral and charged scalar mesons, pseudoscalar mesons, and diquarks in magnetic fields".Physical review d 97.7(2018):12. |
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来源:高能物理研究所
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