Asymptotic scaling of the heavy potential in lattice QCD
Aug 7, 199017 pages
Published in:
- Phys.Rev.D 42 (1990) 2350-2354
Report number:
- C3P-916
Citations per year
Abstract: (APS)
The scaling behavior of the heavy-quark qq¯ potential is studied by measuring Wilson-line operator-operator correlations via extensive simulations on large lattices. By using large size loops (up to 16×12) and extracting the potential at large distance R≥4 we find that the string tension satisfies the two-loop asymptotic scaling within about 95% accuracy at the coupling β=6.0 6.1, 6.2 and α remains a constant. Thus the scaling of the string tension sets in at around β=6. The obtained values σΛL=78±4 and α≃0.54±0.11 agree well with the potential-model analysis on the cc¯ and bb¯ systems. Among the existing underlying string theories, our results favor the Neveu-Schwarz string theory.- quantum chromodynamics
- lattice field theory
- heavy quark
- quarkonium: heavy
- quark antiquark: potential
- Wilson loop
- operator: correlation
- string tension
- scaling
- string model
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