X iv : h ep - p h / 98 11 36 4 v 2 1 5 Fe b 19 99 Quark Propagation in a Quark - Gluon Plasma with Gluon Condensate ∗
نویسنده
چکیده
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.
منابع مشابه
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 ...
متن کاملar X iv : h ep - p h / 99 06 39 1 v 1 1 6 Ju n 19 99 1 Gluon condensate , quark propagation , and dilepton production in the quark - gluon plasma
As an alternative method to lattice and perturbative QCD we suggest to include the gluon condensate into the parton propagators [1]. In this way non-perturbative effects are taken into account within the Green functions technique. In the case of a pure gluon gas with energy density ǫ and pressure p the gluon condensate can be related to the interaction measure ∆ = (ǫ− 3p)/T 4 via [2] 〈G〉T = 〈G〉...
متن کاملar X iv : h ep - p h / 98 04 39 7 v 2 2 5 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...
متن کاملar 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...
متن کاملar 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...
متن کامل