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String excitation energies in SU(N) gauge theories beyond the free-string approximation
In the presence of a static quark--antiquark pair, the spectrum of the low-lying states in SU($N$) gauge theories is discrete and likely to be described, at large quark separations $r$, by an effective string theory. The expansion of the excitation energies in powers of $1/r$, which derives from the...
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
2004
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1088/1126-6708/2004/07/014 http://cds.cern.ch/record/745778 |