منابع مشابه
Confining strings in SU(N) gauge theories
We calculate the string tensions of k-strings in SU(N) gauge theories in both 3 and 4 dimensions. We do so for SU(4) and SU(5) in D=3+1, and for SU(4) and SU(6) in D=2+1. In D=3+1, we find that the ratio of the k = 2 string tension to the k = 1 fundamental string tension is consistent, within quite small errors, with both the M(-theory)QCD-inspired conjecture that σk ∝ sin(πk/N) and with ‘Casim...
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We are really measuring the sum of the cross sections vpver+Em and ppvpm. ln, l ~ 0, but since our neutrino spectrum peaks at 500 MeV/c and is down by an order of magnitude by 1500 MeV/c, we expect the contribution of the final states with additional m. 's to be very small. J. Campbell et al. , Phys. Bev. Lett. 30, 385 (1973). More details of the experiment are given by S. J. Barish, Argonne Na...
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This thesis is concerned with the study of scattering amplitudes in four-dimensional conformal field theories, more particularly the N = 4 super-Yang-Mills theory. We study this theory first at tree level by using twistor space techniques and review the twistor string models that were proposed to describe it. Then, we turn to the issue of iteration relations and all loop ansatze for scattering ...
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We study multi-charged rotating string states on Type IIB regular backgrounds dual to confining SU (N) gauge theories with (softly broken) N = 1 supersymmetry, in the infra red regime. After exhibiting the classical energy/charge relations for the folded and circular two-charge strings, we compute in the latter case the one loop sigma-model quantum correction. The classical relation has an expa...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 1981
ISSN: 0556-2821
DOI: 10.1103/physrevd.24.858