Journal
PHYSICS LETTERS B
Volume 789, Issue -, Pages 210-214Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2018.09.067
Keywords
Lattice gauge theory; Strong interaction; Gradient flow; Stress tensor
Funding
- IBM System Blue Gene Solution at KEK under its Large-Scale Simulation Program [16/17-07]
- JSPS [17K05442, 25287066, 18H05236]
- NSF [PHY1607611]
- Grants-in-Aid for Scientific Research [17K05442, 18H05236, 25287066] Funding Source: KAKEN
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The spatial distribution of the stress tensor around the quark-anti-quark (Q (Q) over bar) pair in SU(3) lattice gauge theory is studied. The Yang-Mills gradient flow plays a crucial role to make the stress tensor well-defined and derivable from the numerical simulations on the lattice. The resultant stress tensor with a decomposition into local principal axes shows, for the first time, the detailed structure of the flux tube along the longitudinal and transverse directions in a gauge invariant manner. The linear confining behavior of the Q (Q) over bar potential at long distances is derived directly from the integral of the local stress tensor. (C) 2018 The Authors. Published by Elsevier B.V.
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