dorsal/arxiv
View SchemaInfrared Behaviour of Propagators and Vertices
| Authors | Frederick T. Hawes, Pieter Maris, Craig D. Roberts |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9807056 |
| URL | https://arxiv.org/abs/nucl-th/9807056 |
| DOI | 10.1016/S0370-2693(98)01105-8 |
| Journal | Phys.Lett.B440:353-358,1998 |
Abstract
We elucidate constraints imposed by confinement and dynamical chiral symmetry breaking on the infrared behaviour of the dressed-quark and -gluon propagators, and dressed-quark-gluon vertex. In covariant gauges the dressing of the gluon propagator is completely specified by P(k^2):= 1/[1+Pi(k^2)], where Pi(k^2) is the vacuum polarisation. In the absence of particle-like singularities in the dressed-quark-gluon vertex, extant proposals for the dressed-gluon propagator that manifest P(k^2=0)=0 and Max[P(k^2)]~10 neither confine quarks nor break chiral symmetry dynamically. This class includes all existing estimates of P(k^2) via numerical simulations.
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"abstract": "We elucidate constraints imposed by confinement and dynamical chiral symmetry\nbreaking on the infrared behaviour of the dressed-quark and -gluon propagators,\nand dressed-quark-gluon vertex. In covariant gauges the dressing of the gluon\npropagator is completely specified by P(k^2):= 1/[1+Pi(k^2)], where Pi(k^2) is\nthe vacuum polarisation. In the absence of particle-like singularities in the\ndressed-quark-gluon vertex, extant proposals for the dressed-gluon propagator\nthat manifest P(k^2=0)=0 and Max[P(k^2)]~10 neither confine quarks nor break\nchiral symmetry dynamically. This class includes all existing estimates of\nP(k^2) via numerical simulations.",
"arxiv_id": "nucl-th/9807056",
"authors": [
"Frederick T. Hawes",
"Pieter Maris",
"Craig D. Roberts"
],
"categories": [
"nucl-th",
"hep-lat",
"hep-ph"
],
"doi": "10.1016/S0370-2693(98)01105-8",
"journal_ref": "Phys.Lett.B440:353-358,1998",
"title": "Infrared Behaviour of Propagators and Vertices",
"url": "https://arxiv.org/abs/nucl-th/9807056"
},
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