Low Dirac Eigenmodes and the Topological and Chiral Structure of the Qcd Vacuum
نویسنده
چکیده
Standard methods in lattice QCD consist of calculating various hadronic amplitudes by tying together appropriate combinations of quark propagators calculated on an ensemble of Monte Carlo generated gauge fields. A number of recent lattice QCD calculations have focused increasing attention on the role of low-lying eigenmodes of the Dirac operator in typical background gauge fields. The decomposition of quark propagators into a sum over eigenmodes provides some very useful insight into the structure of low-enery QCD, particularly in exposing connections between quark propagation and chiral dynamics.
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