The perturbative QCD gradient flow to three loops
The perturbative QCD gradient flow to three loops
复制标题
微扰 QCD 梯度流向三个环路
DOI:
10.1007/jhep06(2016)161
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发表时间:
2016
影响因子:
5.4
通讯作者:
Tobias Neumann
中科院分区:
文献类型:
--
作者:
Robert V. Harlander;Tobias Neumann
The gradient flow in QCD is treated perturbatively through next-to-next-to-leading order in the strong coupling constant. The evaluation of the relevant momentum and flow-time integrals is described, including various means of validation. For the vacuum expectation value of the action density, which turns out to be a useful quantity in lattice calculations, we find a very well-behaved perturbative series through NNLO. Quark mass effects are taken into account through NLO. The theoretical uncertainty due to renormalization-scale variation is significantly reduced with respect to LO and NLO, as long as the flow time is smaller than about 0.1 fm.
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影响因子:
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通讯作者:
Lhpc Collaboration;S. C. D. Dolgov;R. Brower;S. Capitani;P. Dreher;J. Negele;A. Pochinsky;D. Renner;N. Eicker;T. Lippert;K. Schilling;R. Edwards;U. Heller
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影响因子:
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发表时间:
2004-11
期刊:
Nuclear Physics
影响因子:
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通讯作者:
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