Dressing the Quark with QCD Condensates
| dc.creator | Hoyer, Paul | |
| dc.creator | Peigne, Stephane | |
| dc.date | 2003-04-01 | |
| dc.date.accessioned | 2026-07-25T18:47:32Z | |
| dc.description | A condensate of $\pvec = 0$ partons in the perturbative vacuum gives rise to a term $\proptoδ^4(p)$ in the free PQCD propagators. The leading condensate contribution to the quark propagator can be exactly summed since there is a factor $δ^4(p)$ associated to each loop. We calculate the dressed quark propagator in the presence of either a gluon or a quark condensate, for a number of colors $N \to \infty$. The dressed quark propagator satisfies a Dyson-Schwinger type equation which can be exactly solved within our framework. In the case of a gluon condensate the dressed quark propagator has no pole, hence quarks cannot appear in asymptotic states, and moreover the DS equation has a solution which spontaneously breaks chiral symmetry. We also calculate the dressed quark-photon vertex and verify that the corresponding Ward-Takahashi identity is satisfied, and that the dressed self-energy correction to the photon propagator does not shift the physical photon pole. | |
| dc.description | 17 pages, latex, 10 eps figures | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0304010 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0304010 | |
| dc.identifier.uri | https://dspace.dare.co.zw/handle/123456789/58598 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Dressing the Quark with QCD Condensates | |
| dc.type | text |