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Dynamical chiral-symmetry breaking at T=0 and $T
e 0$ in the Schwinger-Dyson equation with lattice QCD data | | Hideaki Iida
; Makoto Oka
; Hideo Suganuma
; | | Date: |
23 Dec 2003 | | Journal: | Eur.Phys.J. A23 (2005) 305-315 | | Subject: | hep-ph | | Affiliation: | Tokyo Inst. Tech. | | Abstract: | For the study of dynamical chiral-symmetry breaking (DCSB) in QCD, we investigate the Schwinger-Dyson (SD) formalism based on lattice QCD data. From the quenched lattice data for the quark propagator in the Landau gauge, we extract the SD kernel function K(p^2), which is the product of the quark-gluon vertex and the polarization factor in the gluon propagator, in an Ansatz-independent manner. We find that the SD kernel function K(p^2) exhibits infrared vanishing and a large enhancement at the intermediate-energy region around p sim 0.6GeV. We investigate the relation between the SD kernel and the quark mass function, and find that the infrared and intermediate energy region (0.35GeV | | Source: | arXiv, hep-ph/0312328 | | Services: | Forum | Review | PDF | Favorites | |
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