ar X iv : h ep - p h / 98 06 20 7 v 1 3 1 M ay 1 99 8 Supercooling of rapidly expanding quark - gluon plasma

ar X iv : h ep - p h / 95 05 25 7 v 1 8 M ay 1 99 5 To VMD , or not to VMD , in the quark - gluon plasma

I review results on the shift of the ρ meson mass at nonzero temperature in a gauged linear sigma model, under the assumption of strict vector meson

ar X iv : h ep - p h / 98 11 36 4 v 1 1 7 N ov 1 99 8 Quark Propagation in a Quark - Gluon Plasma with Gluon Condensate ∗

We present a calculation of the thermal quark propagator taking the gluon condensate above the critical temperature into account. The quark dispersion relation following from this propagator, describing two massive modes, is discussed. PACS numbers: 12.38.Mh, 14.65.-q, 12.38.Lg Typeset using REVTEX Supported by DFG Permanent address: Institut für Theoretische Physik, Universität Giessen, 35392 ...

ar X iv : h ep - p h / 98 05 46 8 v 1 2 6 M ay 1 99 8 COURSE HEAVY QUARK PHYSICS

ar X iv : h ep - p h / 98 07 46 3 v 1 2 2 Ju l 1 99 8 IHEP - TH - 98 - 16 Nonperturbative Corrections to One Gluon Exchange Quark Potentials 1

The leading nonperturbative QCD corrections to the one gluon exchange quark-quark, quark-antiquark and q ¯ q pair-excitation potentials are derived by using a covariant form of nonlocal two-quark and two-gluon vacuum expectation values. Our numerical calculation indicates that the correction of quark and gluon condensates to the quark-antiquark potential improves the heavy quarkonium spectra to...

ar X iv : h ep - p h / 98 04 39 7 v 1 2 4 A pr 1 99 8 Quark and Gluon Orbital Angular Momentum and Spin in Hard Processes ∗

We suggest a method of constructing gauge invariant quark and gluon distributions that describe an abstract QCD observable and apply this method to analyze angular momentum of a hadron. In addition to the known quark and gluon polarized structure functions, we obtain gauge invariant distributions for quark and gluon orbital angular momenta, and consider some basic properties of these distributi...