Nonlocal QCD vacuum in the instanton model

被引:0
作者
Dorokhov, AE [1 ]
Mikhailov, SV [1 ]
机构
[1] Joint Inst Nucl Res, Bogoliubov Lab Theoret Phys, Dubna 141980, Moscow Oblast, Russia
关键词
D O I
暂无
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
A new gauge invariant approach to analyze nonlocal properties of quarks and gluons in the physical QCD vacuum is suggested. It is based on the instanton liquid model. The topologically nontrivial solution to the classical Yang-Mills equations in the physical QCD vacuum is found. This solution, called the constraint instanton, decays exponentially at long distances. It is stable only if the interaction of the instanton with the background field is weak and additional constraints are introduced. The estimates of the averaged virtualities of the quarks and gluons in the QCD vacuum are given. The instanton model is shown to satisfactorily describe the nonlocal structure of the QCD vacuum. The two-point vacuum correlator of the gluon field strengths is calculated in the framework of the effective instanton vacuum model.
引用
收藏
页码:S54 / S56
页数:3
相关论文
共 50 条
  • [41] Leading-twist pion and kaon distribution amplitudes from the QCD instanton vacuum
    Nam, Seung-il
    Kim, Hyun-Chul
    Hosaka, Atsushi
    Musakhanov, M. M.
    PHYSICAL REVIEW D, 2006, 74 (01):
  • [42] Instanton induced chiral symmetry breaking in extended QCD model
    Basu R.
    Parthasarathy R.
    The European Physical Journal C - Particles and Fields, 1998, 4 (4) : 679 - 683
  • [43] Instanton induced chiral symmetry breaking in extended QCD model
    Basu, R
    Parthasarathy, R
    EUROPEAN PHYSICAL JOURNAL C, 1998, 4 (04): : 679 - 683
  • [44] Exploring the chiral regime of QCD in the interacting instanton liquid model
    Cristoforetti, M.
    Faccioli, P.
    Traini, M. C.
    Negele, J. W.
    PHYSICAL REVIEW D, 2007, 75 (03):
  • [45] Path dependence of the quark nonlocal condensate within the instanton model
    Trevisan, LA
    Dorokhov, AE
    Tomio, L
    BRAZILIAN JOURNAL OF PHYSICS, 2004, 34 (3A) : 865 - 868
  • [46] Magnetic susceptibility of the QCD vacuum in a nonlocal SU(3) Polyakov-Nambu-Jona-Lasinio model
    Pagura, V. P.
    Gomez Dumm, D.
    Noguera, S.
    Scoccola, N. N.
    PHYSICAL REVIEW D, 2016, 94 (05)
  • [47] Monopole and instanton effects in QCD
    Masayasu Hasegawa
    Journal of High Energy Physics, 2020
  • [48] Instanton screening in the nonperturbative QCD
    Agasian, N. O.
    PHYSICS OF ATOMIC NUCLEI, 2010, 73 (04) : 652 - 656
  • [49] SCREENING IN THE QCD INSTANTON GAS
    KIKUCHI, H
    NUCLEAR PHYSICS B, 1994, : 147 - 150
  • [50] THE POSSIBILITY TO OBSERVE QCD INSTANTON
    BALITSKY, II
    RYSKIN, MG
    PHYSICS LETTERS B, 1992, 296 (1-2) : 185 - 190