Chiral dynamics of baryons from string theory

2007/01/31 by Deog Ki Hong, Mannque Rho, Ho-Ung Yee +1 · 13 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #hep-th #nucl-th

paper · pdf · doi:10.1103/physrevd.76.061901

published as Phys.Rev.D76:061901,2007 · 4 pages, typos fixed, discussions reworded to clarify a unit, a reference updated

arxiv created 2007/02/08 · openalex publication_date 2007/09/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We study baryons in a holographic model of QCD by Sakai and Sugimoto, realized as small instantons with fundamental string hairs. We introduce an effective field theory of the baryons in the five-dimensional setting, and show that the instanton interpretation implies a particular magnetic coupling. Dimensional reduction to four dimensions reproduces the usual chiral effective action, and, in particular, we estimate the axial coupling g_A between baryons and pions and the magnetic dipole moments, both of which are proportional to N_c. We extrapolate to finite N_c and discuss subleading corrections.

Citations

• Low energy hadron physics in holographic QCD
• Baryons And Branes In Anti de Sitter Space
• Spin-flavor structure of largeNcbaryons
• The Large N Limit of Superconformal Field Theories and Supergravity

Cited by

• Model Independent Tests of Skyrmions and Their Holographic Cousins
• Hadron Form Factors in AdS/QCD
• On Instantons in Holographic QCD
• Baryons and the Chern-Simons Term in Holographic QCD with Three Flavors
• Dynamics of baryons from string theory and vector dominance
• Nucleon form factors from 5D skyrmions
• Baryon-Number-Induced Chern-Simons Couplings of Vector and Axial-Vector Mesons in Holographic QCD
• Dense and hot holographic QCD: finite baryonic E field
• Consequences of the partial restoration of chiral symmetry in an AdS/QCD model
• Holographic deuteron and nucleon-nucleon potential
• Low energy pion-pion elastic scattering in the Sakai-Sugimoto model
• Holographic calculation of hadronic contributions to muong−2
• Three-flavor quark mass dependence of baryon spectra in holographic QCD