Tensor susceptibility of the QCD vacuum from an effective quark–quark interaction

Hongting Yang, Hongshi Zong, Jialun Ping, Fan Wang
2003 Physics Letters B  
Treating the bilocal quark-quark interaction kernel as an input parameter, the self-energy functions can be determined from the "rainbow" Dyson-Schwinger equation, which is obtained in the global color symmetry model. The tensor susceptibility of QCD vacuum can be calculated directly from these self-energy functions. The values we obtained are much smaller than the estimations from QCD sum rules and from chiral constituent quark model.
doi:10.1016/s0370-2693(03)00174-6 fatcat:lo5fgewfczetjfvnjlecvdap2u