Abstract

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The glue content of the pion

Presenter: Harvey Meyer — Massachusetts Institute of Technology

Harvey B. Meyer, John W. Negele

Different discretizations of the gluonic energy-momentum tensor and the trace anomaly are studied on the lattice. We then compute the glue momentum fraction in the pion, as well as the size of the trace anomaly in the pion in quenched QCD. We normalize these quantities non-perturbatively and discuss some implications based on the momentum sum rule. Finally we point out promising applications to thermodynamics and transport coefficient calculations of the techniques developed here.