6 v 1 2 3 Ju l 1 99 3 CU - TP - 601 June 1993 Hard Thermal Loops , Gauged WZNW - Action and the Energy of Hot Quark - Gluon Plasma

Hard thermal loops, gauged WZNW action, and the energy of hot quark-gluon plasma.

ar X iv : h ep - t h / 94 03 14 5 v 1 2 3 M ar 1 99 4 HARD THERMAL LOOPS , CHERN - SIMONS THEORY AND THE QUARK - GLUON PLASMA

The generating functional for hard thermal loops in Quantum Chromodynamics is important in setting up a resummed perturbation theory. I review how this functional is related to the eikonal for a Chern-Simons gauge theory, and using an auxiliary field, to the gauged Wess-Zumino-Novikov-Witten action. The induced current due to hard thermal loops, properly incorporating damping effects, is also b...

Simons and Wznw Theories and the Quark - Gluon Plasma

Summation over hard thermal loops, by themselves and as insertions in higher order Feynman diagrams, is important in thermal perturbation theory for Quantum Chromodynamics, so that all contributions of a given order in the coupling constant can be consistently taken into account. I review some of the basic properties of hard thermal loops and how the generating functional for them is related to...

ar X iv : n uc l - th / 9 50 30 03 v 2 8 M ar 1 99 5 Hot gluon propagator 1

One of the recently most developing fields of high energy heavy ion physics is the study of the underlying field theory at high temperatures. Despite of the naive picture of the quark gluon plasma as an ideal gas of quarks and gluons stemming from a given interpretation of early lattice gauge theory simulations it is since long clear that the continuum theory is plagued by serious infrared dive...

ar X iv : h ep - p h / 97 10 20 3 v 1 1 O ct 1 99 7 Soft photons and hard thermal loops ∗

We calculate within the Hard Thermal Loop expansion the production rate of soft photons and lepton pairs by a hot quark-gluon plasma at thermal equilibrium, up to the 2-loop order. Strong collinear divergences appear to mix the orders of the perturbative expansion so that the 2-loop order is in fact dominant compared to the 1-loop order. More precisely, angular integrals that would otherwise be...