科研之友
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摘要
It has been argued by Caron-Huot that infrared contributions to the jet quenching parameter in hot QCD, denoted by (q) over cap, can be extracted from an analysis of a certain static-potential related observable within the dimensionally reduced effective field theory. Following this philosophy, the order of magnitude of a non-perturbative contribution to (q) over cap from the colour-magnetic scale, g(2)T/pi, is estimated. The result is small; it is probably below the parametrically perturbative but in practice slowly convergent contributions from the colour-electric scale, whose all-orders resummation therefore remains an important challenge.
- 出版日期2012-11
