The infrared behavior of the quark–gluon vertex of quenched Landau gauge QCD is studied
by analyzing its Dyson–Schwinger equation. Building on previously obtained results for …

We formulate the covariant equations for quark-antiquark bound states in Minkowski space
in the framework of the covariant spectator theory. The quark propagators are dressed with …

The pattern of a large approximate degeneracy of the excited hadron spectra (larger than
the chiral restoration degeneracy) is present in the recent experimental report of Bugg. Here …

A simple argument for the restoration of parity symmetry high in the hadron spectrum is
presented. The restoration scale is estimated to be 2.5 GeV. This in turn implies that typical …

Abstract In 1970 Kurt Symanzik proposed a'precarious' ϕ 4-theory with a negative quartic
coupling constant as a valid candidate for an asymptotically free theory of strong …

We study the possibility of binding eight quarks in a molecular hadronic system composed of
two nucleons and an antikaon, with the quantum numbers of a hexaquark flavor, in …

During the period 1964OCo1972, Stephen L Adler wrote seminal papers on high energy
neutrino processes, current algebras, soft pion theorems, sum rules, and perturbation theory …

We study a phenomenological model that mimics the characteristics of QCD theory at finite
temperature. The model involves fermions coupled with a modified Abelian gauge field in a …

This paper presents the first study of mesons with a quark and an antiquark with different
and finite masses in a simple confining and chiral invariant quark-antiquark interaction …

We study the two-meson virtual cloud contribution to the self-energy of the SU (3)
antidecuplet, to which the Θ+ pentaquark is assumed to belong. This is motivated by the …