2009/02/11 by Tony Gherghetta, Joseph I. Kapusta, Thomas M. Kelley · 10 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Chiral perturbation theory #Chiral symmetry breaking #Dilaton #Geometry #Nambu–Jona-Lasinio model #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum electrodynamics #Scalar (mathematics) #Spontaneous symmetry breaking #Symmetry breaking #Theoretical physics #hep-ph #hep-th
paper · pdf · doi:10.1103/physrevd.79.076003
published as Phys.Rev.D79:076003,2009 · 20 pages, 8 figures, 2 tables
arxiv created 2009/02/11 · openalex publication_date 2009/04/06 · arxiv updated 2010/04/23 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We show how to incorporate chiral-symmetry breaking in the soft-wall version of the anti-de Sitter/QCD model by using a modified dilaton profile and a quartic term in the bulk scalar potential. This allows one to separate the dependence on spontaneous and explicit chiral-symmetry breaking. Moreover, our 5D model automatically incorporates linear trajectories and non chiral-symmetry restoration for highly excited radial states. We compare our resulting mass spectra in the scalar, vector, and axial-vector sectors with the respective QCD resonances and find reasonable agreement using the known values for the pion mass and decay constant.