Laine, M.; Schicho, P.; Schröder, Y. (2018). Soft thermal contributions to 3-loop gauge coupling. Journal of High Energy Physics, 2018(5) Springer 10.1007/JHEP05(2018)037
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We analyze 3-loop contributions to the gauge coupling felt by ultrasoft (“mag-
netostatic”) modes in hot Yang-Mills theory. So-called soft/hard terms, originating from dimension-six operators within the soft effective theory, are shown to cancel 1097/1098 of the IR divergence found in a recent determination of the hard 3-loop contribution to the soft gauge coupling. The remaining 1/1098 originates from ultrasoft/hard contributions, induced by dimension-six operators in the ultrasoft effective theory. Soft 3-loop contributions are likewise computed, and are found to be IR divergent, rendering the ultrasoft gauge coupling non-perturbative at relative order O(α3/2). We elaborate on the implications of these findings for effective theory studies of physical observables in thermal QCD.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) 08 Faculty of Science > Institute of Theoretical Physics |
UniBE Contributor: |
Laine, Mikko Sakari, Schicho, Philipp Maximilian |
Subjects: |
500 Science > 530 Physics |
ISSN: |
1029-8479 |
Publisher: |
Springer |
Language: |
English |
Submitter: |
Esther Fiechter |
Date Deposited: |
30 Aug 2018 15:43 |
Last Modified: |
05 Dec 2022 15:17 |
Publisher DOI: |
10.1007/JHEP05(2018)037 |
ArXiv ID: |
1803.08689 |
BORIS DOI: |
10.7892/boris.119667 |
URI: |
https://boris.unibe.ch/id/eprint/119667 |
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