RT Conference Proceedings
T1 The low-momentum ghost dressing function and the gluon mass
A1 Rodríguez Quintero, José
AB We study both regular (the zero-momentum ghost dressing function not diverging), also nameddecoupling, and critical (diverging), also named scaling, Yang-Mills propagators solutions by analyzingthe low-momentum behaviour of the ghost propagator Dyson-Schwinger equation (DSE)in Landau gauge, assuming for the truncation a constant ghost-gluon vertex, as it is extensivelydone, and a simple model for a massive gluon propagator. The asymptotic expression obtained forthe regular or decoupling ghost dressing function up to the order O(q2) fits pretty well the lowmomentumghost propagator obtained through the numerical integration of the coupled gluon andghost DSE in the PT-BFM scheme and, when the size of the coupling renormalized at some scaleapproaches some critical value, the PT-BFM results seems to trend to the the scaling solution as alimiting case.
PB Sissa Medialab
SN 1824-8039
YR 2010
FD 2010-11
LK http://hdl.handle.net/10272/18356
UL http://hdl.handle.net/10272/18356
LA eng
NO Rodríguez Quintero, J. (2010). The low-momentum ghost dressing function and the gluon mass. Proceedings of Science. Proceedings of Light Cone 2010-023: Relativistic Hadronic and Particle Physics (LC2010) - Session 3: Non-perturbative methods and renormalization theory (Convener: D. Binosi). Vol. 119. DOI: https://doi.org/10.22323/1.119.0023
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026