Correlation functions and dissipation in hot QCD

Details Correlation functions and dissipation in hot QCD Correlation functions and dissipation in hot QCD

2001-11-02

arxiv.org/abs/hep-ph/0111020v2

Nucl.Phys. B629 (2002) 233-254

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, latex 2e, no figure Comments added in Introduction, in Sec3

Scientific paper

10.1016/S0550-3213(02)00143-8

A recently proposed generating functional allows the construction of the full set of n-point Green functions in QCD at high temperature and at distances larger than 1/gT. One may then learn how the system maintains its thermal equilibrium in the quantum field theory approach, i.e. which process compensates for the important dissipation due to collisions. This system may be characterized by quantities which have a classical limit. One finds that the fluctuations of the coloured field are not gaussian ones. A comparison is made with the semi-classical approach where a random noise is the source of fluctuations.

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