RT Journal Article
T1 Studying unquenching effects in QCD with Dyson-Schwinger equations
A1 Llanes Estrada, Felipe José
A1 Fischer, Christian S.
A1 Alkofer, Reinhard
A1 Cassing, Wolfgang
A1 Watson, Peter
AB We summarise recent results on the properties of gluons, quarks and light mesons from the Green's functions approach to QCD. We discuss a self-consistent, infrared power law solution for the Schwinger-Dyson equations of the 1PI Greens functions of Yang-Mills theory. The corresponding running coupling has a universal fixed point at zero momentum. Based on these analytical results a truncation scheme for the coupled system of Schwinger-Dyson equations for the propagators of QCD and the Bethe-Salpeter equation for light mesons has been formulated. We compare numerical results for charge eigenstate vector and pseudoscalar meson observables with corresponding lattice data. The effects of unquenching the system are found to be small but not negligible.
PB Elsevier Science Bv
SN 0920-5632
YR 2006
FD 2006-03
LK https://hdl.handle.net/20.500.14352/50932
UL https://hdl.handle.net/20.500.14352/50932
LA eng
NO © 2006 Elsevier B.V. All rights reserved.It is a pleasure to thank the organisers of the Workshop on computational hadron physics for all their efforts which made this highly interesting conference possible. C. S. Fischer and P. Watson thank M. Pennington for inspiring discussions. The work summarised here has been supported by a grant from the Ministry of Science, Research and the Arts of Baden-W¨urttemberg (Az: 24-7532.23-19-18/1 and 24 7532.23-19-18/2), the Deutsche Forschungsgemeinschaft (DFG) under contract Fi 970/2-1, the Virtual Institute for Dense Hadronic Matter and QCD Phase Transitions and the Spanish FPA2005-02327.Workshop on Computational Hadron Physics (2005.Nicosia, Chipre)
NO Ministry of Science, Research and the Arts of Baden-Württemberg
NO Deutsche Forschungsgemeinschaft (DFG)
NO Virtual Institute for Dense Hadronic Matter and QCD Phase Transitions
DS Docta Complutense
RD 9 abr 2025