出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：I calculate the quark-gluon vertex of the tensor type Γ(p,q) = g3(p,q)p4 /q, vector type g2(p,q)q
and scalar type g1(p,q), for a small spacial momentum transfer q = q using the gauge configuration
of the Domain Wall Fermion (DWF) provided by the RBC-UKQCD collaboration.
The quark propagator of Coulomb gauge in the cylinder cut, i.e. the four momentum p is directed
along the diagonal of the hyper-cubic space has small fluctuation and I use this propagator in the
evaluation of the operators by applying the non-perturbative renormalization method.
The q dependence of the running coupling αs,g1 (q) is compared with αI(q) measured by the
ghost-gluon vertex in Coulomb gauge and αs(q) measured in Landau gauge.
