On the infrared behavior of the shear spectral function in hot Yang-Mills theory - INSPIRE

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On the infrared behavior of the shear spectral function in hot Yang-Mills theory

Aleksi Vuorinen
(
- Helsinki Inst. of Phys. and
- Helsinki U.
)
,
Yan Zhu
(
- Santiago de Compostela U. and
- Santiago de Compostela U., IGFAE
)

Feb 9, 2015

26 pages

Published in:

JHEP 03 (2015) 138

Published: Mar 25, 2015

e-Print:

1502.02556 [hep-ph]

DOI:

10.1007/JHEP03(2015)138

Report number:

HIP-2015-02-TH

View in:

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Abstract: (Springer)

We revisit the determination of the two-loop spectral function in the shear channel of hot Yang-Mills theory. Correcting a technical error in an earlier computation is seen to improve the infrared behavior of the quantity significantly, while a partial Hard Thermal Loop resummation is seen to have only a very minor numerical effect on the result. These facts make it possible to straightforwardly apply the spectral function to the corresponding imaginary time correlator and the shear sum rule.

Note:

25 pages, 5 figures. v2: Minor corrections in discussion and references

Quark-Gluon Plasma
Thermal Field Theory
Resummation
gauge field theory: Yang-Mills
higher-order: 2
spectral representation
infrared
hard thermal loop approximation
correlation function
resummation

References(38)

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