String-like behaviour of 4d SU(3) Yang-Mills flux tubes

Abstract

We present here results on the fine structure of the static q\bar q potential in d=4 SU(3) Yang-Mills theory. The potential is obtained from Polyakov loop correlators having separations between 0.3 and 1.2 fermi. Measurements were carried out on lattices of spatial extents of about 4 and 5.4 fermi. The temporal extent was 5.4 fermi in both cases. The results are analyzed in terms of the force between a q\bar q pair as well as in terms of a scaled second derivative of the potential. The data is accurate enough to distinguish between different effective string models and it seems to favour the expression for ground state energy of a Nambu-Goto string.

arXiv comment9 pages in LaTeX with 2 figures and 2 tables in JHEP style. Replaced to match with shortened published version

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• Probing boundary-corrections to Nambu-Goto open string energy levels in 3d SU(2) gauge theory
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• Continuum limit of string formation in 3-d SU(2) LGT
• Zero Point Energy of Renormalized Wilson Loops
• The Width of the Color Flux Tube at 2-Loop Order
• Linear broadening of the confining string in Yang-Mills theory at low temperature
• The confining string beyond the free-string approximation in the gauge dual of percolation
• Heavy Quark Potential from Gauge/Gravity Duality: A Large D Analysis
• The spectrum of closed loops of fundamental flux in D=2+1 SU(N) gauge theories
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• Stiff self-interacting string near QCD deconfinement point
• Spin-String Interaction in QCD Strings
• On QCD strings beyond non-interacting model
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• Vacuum structure and string tension in Yang-Mills dimeron ensembles
• Intermediate-Distance String Effects in Wilson Loops\\ via Boundary Action
• Strings of diquark-quark (QQ)Q baryon before phase transition