A Holographic QCD and Excited Baryons from String Theory

Abstract

We study baryons of arbitrary isospin in a stringy holographic QCD model. In this D4-D8 holographic setting, the flavor symmetry is promoted to a gauge symmetry in the bulk, and produces, as KK modes of the gauge field, pions and spin one mesons of low energy QCD. Baryons of arbitrary isospins are represented as instanton solitons with isospin and spin quantum numbers locked, in a manner similar to the Skyrmion model. The soliton picture leads to a natural effective field theory of arbitrary baryons interacting with mesons. Couplings of baryons to axial mesons, including pions, are dominated in the large $N_c$ limit by a direct coupling to the flavor field strength in five dimensions. We delineate the relevant couplings and determine their strengths. This work generalizes part of hep-th/0701276 and arXiv:0705.2632 [hep-th] to all excited baryons. Due to technical difficulties in introducing relativistic higher spin fields, we perform all computations in the nonrelativistic regime, which suffices for the leading $N_c$ predictions.

33 pages, two references added, JHEP version

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Cited by in corpus (19)

• Comments on Baryons in Holographic QCD
• A Matrix Model for Baryons and Nuclear Forces
• Three-flavor quark mass dependence of baryon spectra in holographic QCD
• Electromagnetic Nucleon-to-Delta Transition in Holographic QCD
• Long-distance properties of baryons in the Sakai-Sugimoto model
• Holographic Deuteron and Nucleon-Nucleon Potential
• Baryonic Response of Dense Holographic QCD
• Setting the scale of the p p and p bar p total cross sections using AdS/QCD
• Central Production of Eta and Eta-prime via Double Pomeron Exchange in the Sakai-Sugimoto Model
• Holographic aspects of three dimensional QCD from string theory
• Conformal symmetry and light flavor baryon spectra
• Nuclear states and spectra in holographic QCD
• Central Production of $\eta$ via Double Pomeron Exchange and Double Reggeon Exchange in the Sakai-Sugimoto Model
• Production of negative parity baryons in the holographic Sakai-Sugimoto model
• Weak-Interacting Holographic QCD
• A Second Look at String-Inspired Models for Proton-Proton Scattering via Pomeron Exchange
• Toward Bound-State Approach to Strangeness in Holographic QCD
• Nucleon-Meson Couplings in One Boson Exchange Potential using Non-Critical String Theory
• Relativistic baryons in the Skyrme model revisited