Strings and {QCD}
Apr, 19855 pages
Published in:
- Phys.Lett.B 160 (1985) 144-148
- Published: 1985
Report number:
- CERN-TH-4163/85
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Abstract: (Elsevier)
We point out that the occurrence of a large-distance “Coulomb” term in the static quark-antiquark potential is related to tachyons in the underlying string model. Thus the tachyon contents determine the coefficient of the “Coulomb” term. For a scalar string, one has Lüscher's result if −(d − 2) π 24R , for a Neuve-Schwarz string one obtains if − (d − 2) gp 16R , whereas for the Ramond string (and strings without tachyons) the “Coulomb” term vanishes. Monte Carlo data for QCD prefers a “Coulomb” term. This is not inconsistent with the tachyonic origin of this term, since the large-distance behaviour of string models is consistent even with tachyons. Also, critical dimensions are not necessary at large distances.- MODEL: STRING
- POSTULATED PARTICLE: TACHYON
- QUARK ANTIQUARK: POTENTIAL
- POTENTIAL: COULOMB
- QUANTUM CHROMODYNAMICS
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