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Spectral functions of confined particles
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Spectral functions of confined particles
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We determine the gluon and ghost spectral functions along with the analytic structure of the associated propagators from numerical data describing gauge correlators at space-like momenta obtained by either solving the Dyson-Schwinger equations or through lattice simulations. Our novel reconstruction technique shows the expected branch cut for the gluon and the ghost propagator, which, in the gluon case, is supplemented with a pair of complex conjugate poles. Possible implications of the existence of these poles are briefly addressed.
Forward citations
Cited by 2 Pith papers
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Three-body unitary determination of the $f_1(1285)$ and $f_1(1420)$ pole positions
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A beginner's guide to functional methods in particle physics
A pedagogical review showing how Dyson-Schwinger, 3PI, and Bethe-Salpeter equations can be chained together to compute glueball masses in pure Yang-Mills theory, matching lattice QCD.
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