Gluon Condensate and Non-Perturbative Quark-Photon Vertex
arXiv:hep-ph/9911398 · doi:10.1016/S0370-2693(99)01441-0
Abstract
We evaluate the quark-photon vertex non-perturbatively taking into account the gluon condensate at finite temperature. This vertex is related to the previously derived effective quark propagator by a QED like Ward-Takahashi identity. The importance of the effective vertex for the dilepton production rate from a quark-gluon plasma is stressed.
9 pages including two figures
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