ar X iv : h ep - l at / 0 01 10 90 v 1 3 0 N ov 2 00 0 PARALLEL COMPUTING FOR QCD ON A PENTIUM CLUSTER

ar X iv : h ep - l at / 0 01 10 26 v 2 1 3 N ov 2 00 0 1 QCD vacuum structure

Several issues related to the structure of the QCD vacuum are reviewed. We concentrate mostly on results concerning instantons and center vortices.

ar X iv : h ep - l at / 0 01 10 26 v 1 3 N ov 2 00 0 1 QCD vacuum structure

Several issues related to the structure of the QCD vacuum are reviewed. We concentrate mostly on results concerning instantons and center vortices.

ar X iv : h ep - p h / 01 11 07 2 v 2 8 N ov 2 00 1 The φa 0 γ - and φσγ - vertices in light cone QCD

ar X iv : h ep - p h / 01 11 07 2 v 1 7 N ov 2 00 1 The φa 0 γ - and φσγ - vertices in light cone QCD

The φa 0 γ-and φσγ-vertices in light cone QCD Abstract We study φa 0 γ-and φσγ-vertices in the framework of the light cone QCD sum rules and we estimate the coupling constants g φa 0 γ and g φσγ utilizing ωφ-mixing. We compare our results with the previous estimations of these coupling constants in the literature obtained from phenomenological considerations .

ar X iv : h ep - l at / 0 01 10 13 v 3 8 N ov 2 00 0 1 Chemical potential response of meson masses at finite temperature

We study the response of meson masses to the chemical potential (∂m/∂µ) at high temperature and at zero chemical potential on N f = 2 lattice with staggered fermions. Preliminary results for the meson composed of different quarks show that ∂m/∂µ|µ=0 is negative in the confinement phase and positive in the deconfinement phase.