Resolving the Bethe–Salpeter Kernel  

作　　者：Si-Xue Qin Craig D.Roberts 秦思学;Craig D.Roberts(Department of Physics,Chongqing University,Chongqing 401331,China;School of Physics,Nanjing University,Nanjing 210093,China;Institute for Nonperturbative Physics,Nanjing University,Nanjing 210093,China)

机构地区：[1]Department of Physics,Chongqing University,Chongqing 401331,China [2]School of Physics,Nanjing University,Nanjing 210093,China [3]Institute for Nonperturbative Physics,Nanjing University,Nanjing 210093,China

出　　处：《Chinese Physics Letters》2021年第7期17-22,共6页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(Grant Nos.11805024 and 11947406).

摘　　要：A novel method for constructing a kernel for the meson bound-state problem is described.It produces a closed form that is symmetry-consistent(discrete and continuous)with the gap equation defined by any admissible gluon-quark vertex,Γ.Applicable even when the diagrammatic content ofΓis unknown,the scheme can foster new synergies between continuum and lattice approaches to strong interactions.The framework is illustrated by showing that the presence of a dressed-quark anomalous magnetic moment inΓ,an emergent feature of strong interactions,can remedy many defects of widely used meson bound-state kernels,including the mass splittings between vector and axial-vector mesons and the level ordering of pseudoscalar and vector meson radial excitations.

关 键 词：MESON QUARK ADMISSIBLE 

分 类 号：O572.33[理学—粒子物理与原子核物理]