2004/10/19 by Martı́n Kruczenski, Martin Kruczenski, Leopoldo A. Pando Zayas +2 · 3 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Degrees of freedom (physics and chemistry) #Hadron #Meson #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum chromodynamics #Quantum mechanics #Quark #String (physics) #Supergravity #Supersymmetry #Theoretical physics #hep-th
paper · pdf · doi:10.1088/1126-6708/2005/06/046
published as JHEP0506:046,2005 · 21 pages, 4 figures. v2: typos corrected, references and acknowledgments added
arxiv created 2004/10/19 · openalex publication_date 2005/06/16 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We discuss Regge trajectories of dynamical mesons in large-Nc QCD, using the supergravity background describing Nc D4-branes compactified on a thermal circle. The flavor degrees of freedom arise from the addition of Nf<<Nc D6 probe branes. Our work provides a string theoretical derivation, via the gauge/string correspondence, of a phenomenological model describing the meson as rotating point-like massive particles connected by a flux string. The massive endpoints induce nonlinearities for the Regge trajectory. For light quarks the Regge trajectories of mesons are essentially linear. For massive quarks our trajectories qualitatively capture the nonlinearity detected in lattice calculations.