2003/04/30 by Martin Kruczenski, Martín Kruczenski, David Mateos +4 · 21 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Quantum Chromodynamics and Particle Interactions #Quantum and Classical Electrodynamics #hep-ph #hep-th
paper · pdf · doi:10.1088/1126-6708/2003/07/049
published as JHEP 0307:049,2003 · LaTeX, 39 pages, 4 figures, uses epsf. v2: typos corrected. references added
arxiv created 2003/06/11 · openalex publication_date 2003/07/21 · arxiv updated 2011/07/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We compute the meson spectrum of an N=2 super Yang-Mills theory with fundamental matter from its dual string theory on AdS5 x S5 with a D7-brane probe. For scalar and vector mesons with arbitrary R-charge the spectrum is computed in closed form by solving the equations for D7-brane fluctuations; for matter with non-zero mass mq it is discrete, exhibits a mass gap of order mq / sqrt(gs N) and furnishes representations of SO(5) even though the manifest global symmetry of the theory is only SO(4). The spectrum of mesons with large spin J is obtained from semiclassical, rotating open strings attached to the D7-brane. It displays Regge-like behaviour for J << sqrt(gs N), whereas for J >> sqrt(gs N) it corresponds to that of two non-relativistic quarks bound by a Coulomb potential. Meson interactions, baryons and `giant gauge bosons' are briefly discussed.