ar X iv : h ep - p h / 99 11 37 8 v 1 1 6 N ov 1 99 9 Klein - Fock equation , proper - time formalism and symmetry of Hydrogen atom ∗

ar X iv : h ep - p h / 99 11 40 8 v 1 19 N ov 1 99 9 Quark Matter 99 Summary : Hadronic Signals

ar X iv : h ep - t h / 95 11 04 6 v 1 7 N ov 1 99 5 OPERATOR CUTOFF REGULARIZATION AND RENORMALIZATION GROUP IN YANG - MILLS THEORY

We derive a manifestly gauge invariant low energy blocked action for Yang-Mills theory using operator cutoff regularization, a prescription which renders the theory finite with a regulating smearing function constructed for the proper-time integration. By embedding the momentum cutoff scales in the smearing function, operator cutoff formalism allows for a direct application of Wilson-Kadanoff r...

ar X iv : h ep - t h / 94 10 11 8 v 2 2 2 N ov 1 99 4 WILSON LOOPS , qq̄ and 3 q POTENTIALS , BETHE – SALPETER EQUATION

ar X iv : h ep - t h / 92 11 12 4 v 1 2 6 N ov 1 99 2 Chiral Symmetry Breaking with the Curtis - Pennington Vertex

We study chiral symmetry breaking in quenched QED 4 , using a vertex Ansatz recently proposed by Curtis and Pennington. Bifurcation analysis is employed to establish the existence of a critical coupling and to estimate its value. The main results are in qualitative agreement with the ladder approximation, the numerical changes being minor.

ar X iv : h ep - p h / 99 11 27 9 v 1 9 N ov 1 99 9 Chiral dynamics of many - pion systems

Based on the Weinberg lagrangian or, in a new language, the lagrangian of hidden local symmetry added with the term induced by the anomalous lagrangian of Wess and Zumino, the dynamics of the decays ρ → 4π and ω → 5π is considered. The excitation curves of ρ resonance in its decay to 4π are obtained for the first time. The comparison with recent CMD-2 data is given.