Continuum QCD and light mesons
| dc.creator | Maris, P. | |
| dc.date | 2000-09-21 | |
| dc.date.accessioned | 2026-07-07T05:38:14Z | |
| dc.date.available | 2026-07-07T05:38:14Z | |
| dc.description | The ladder-rainbow truncation of the set of Dyson-Schwinger equations is used to study light mesons. The parameters in the effective interaction are constrained by the chiral condensate and f_π; the current quark masses are fitted to m_πand m_K. The dressed quark propagators are in qualitative agreement with recent lattice-QCD results at low q^2 while having the correct perturbative behavior at large q^2. The resulting vector meson masses are within 5% of the experimental values. The obtained electromagnetic form factors and strong and electroweak coupling constants are also in good agreement with the data. At finite temperature, this truncation leads to a mean-field chiral phase transition. The spatial pion mass is almost constant below this transition, but rises with T close to and above T_c. The mass of its chiral partner, an idealized sigma meson, decreases with T until T_c, where it becomes degenerate with the pion. | |
| dc.description | 13 pages, 8 figures, uses sprocl, Invited talk at the IVth Conference on Quark Confinement and the Hadron Spectrum, Vienna, July 2000 | |
| dc.identifier | https://arxiv.org/abs/nucl-th/0009064 | |
| dc.identifier | http://arxiv.org/abs/nucl-th/0009064 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/81544 | |
| dc.subject | Nuclear Theory | |
| dc.title | Continuum QCD and light mesons | |
| dc.type | text |