https://doi.org/10.1140/epja/s10050-024-01328-0
Regular Article - Theoretical Physics
Pure gauge flux tube and running coupling from EMT at high temperature
Laboratory of Theoretical and High Energy Physics, Institute of Physics and Technology, Mongolian Academy of Sciences, Peace Ave. 54b, 13330, Ulaanbaatar, Mongolia
Received:
6
February
2024
Accepted:
27
April
2024
Published online:
24
May
2024
In this work, we measure the flux tube from the energy-momentum tensor around the static quark and antiquark in SU(3) pure gauge theory at high temperatures. The gradient flow method has been used to formulate the energy-momentum tensor on the lattice and increase the signal-to-noise ratio. In this study, we have tried to compute the running coupling 
from the energy-momentum tensor in the flux tube for the 
pair. From the dependence of on temperature and interquark distance, the maximum value of at a certain distance for each temperature has been found, and the distance was inversely proportional to temperature 
. Also, we found that between the 
and flux tube disappearance distance 
has weak linear dependence. We also showed that the flux tube structure completely disappeared from the stress-tensor distribution around the quark and antiquark at this distance.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
