Boucaud, Ph.Leroy, J. P.Le Yaouanc, AlainMicheli, J.Pène, O.Rodríguez Quintero, José2020-06-242020-06-242008-06Boucaud, P., Leroy, J. ., Yaouanc, A. L., Micheli, J., Pène, O., & Rodríguez Quintero, J. (2008). On the IR behaviour of the Landau-gauge ghost propagator. Journal of High Energy Physics, 2008(6), 099–099. DOI: https://doi.org/10.1088/1126-6708/2008/06/0991126-6708http://hdl.handle.net/10272/18369We examine analytically the ghost propagator Dyson-Schwinger Equation (DSE) in the deep IR regime and prove that a finite ghost dressing function at vanish- ing momentum is an alternative solution (solution II) to the usually assumed divergent one (solution I). We furthermore find that the Slavnov-Taylor identities discriminate between these two classes of solutions and strongly support the solution II. The latter turns out to be also preferred by lattice simulations within numerical uncertainties.engAtribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/ConfinementLattice Gauge Field TheoriesNonperturbative EffectsLattice Quantum Field Theoryjournal article10.1088/1126-6708/2008/06/099open access