The ultraviolet limit and sum rule for the shear correlator in hot Yang-Mills theory

Details The ultraviolet limit and sum rule for the shear correlator in hot Yang-Mills theory The ultraviolet limit and sum rule for the shear correlator in hot Yang-Mills theory

2011-09-29

arxiv.org/abs/1109.6548v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, 2 figures. v2: small clarifications, one reference added, published version

Scientific paper

We determine a next-to-leading order result for the correlator of the shear stress operator in high-temperature Yang-Mills theory. The computation is performed via an ultraviolet expansion, valid in the limit of small distances or large momenta, and the result is used for writing operator product expansions for the Euclidean momentum and coordinate space correlators as well as for the Minkowskian spectral density. In addition, our results enable us to confirm and refine a shear sum rule originally derived by Romatschke, Son and Meyer.

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