22-27 March 2015
Hotel do Bosque
Brazil/East timezone

Chiral symmetry breaking with unquenched lattice ingredients

Not scheduled
3h 30m
Hotel do Bosque

Hotel do Bosque

Rodovia Mário Covas (Rio-Santos) BR - 101 Sul, Km 533, Angra dos Reis, RJ, Brazil
Poster Strong and electroweak interactions in the standard model

Speaker

Mr Jeyner Castro Cardona (UNICAMP)

Description

We study in detail the nonperturbative modifications caused to the dynamical quark mass by the inclusion of a small number of quark families in the gluon propagator and ghost dressing function obtained from the unquenched lattice simulations. We solve the quark gap equation using a non-Abelian Ansatz for the quark-gluon vertex which displays a crucial dependence on the ghost dressing function and the quark-ghost scattering amplitude. As a result, we obtain, in the chiral limit, dynamical quark masses of the order of 300 MeV for a different numbers of quark flavors and we find a good agreement with lattice data availaible in the literature.

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