A 5D holographic QCD axion model identifies bulk modes for the axion and eta prime, traces the quality problem to insufficient compositeness, and finds the physical axion mostly in the bulk gauge field when quality is high.
Chiral symmetry breaking from five dimensional spaces
4 Pith papers cite this work. Polarity classification is still indexing.
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abstract
Based on the AdS/CFT correspondence we study the breaking of the chiral symmetry in QCD using a simple five dimensional model. The model gives definite predictions for the spectrum of vector mesons, their decay constants and interactions as a function of one parameter related to the quark condensate. We calculate the coefficients $L_i$ of the low-energy QCD chiral lagrangian, as well as other physical quantities for the pions. All the predictions are shown to be in good agreement with the experimental data. We also show that they are robust under modifications of the 5D metric in the IR, and that some of them arise as a consequence of the higher-dimensional gauge symmetry. For example, at the tree-level, we find $M_\rho \simeq \sqrt{3} g_{\rho\pi\pi} F_\pi$, $F_\rho\simeq \sqrt{3} F_\pi$ and BR($a_1\to \pi\gamma)=0$.
verdicts
UNVERDICTED 4representative citing papers
Holographic model of massive deconfined quarks yields a stiff enough equation of state to allow stable 2-solar-mass hybrid stars with quark cores for certain nuclear phases.
Holographic AdS/QCD calculations of configurational entropy and complexity for Delta baryons yield Regge trajectories that organize known masses and predict additional resonances.
In Starobinsky-dilaton holographic QCD, rho meson masses match experiment for α = 10^{-8} and recover prior results at α = 0.
citing papers explorer
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The Holographic QCD Axion in Five Dimensions
A 5D holographic QCD axion model identifies bulk modes for the axion and eta prime, traces the quality problem to insufficient compositeness, and finds the physical axion mostly in the bulk gauge field when quality is high.
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Properties of Stable Massive Quark Stars in Holography
Holographic model of massive deconfined quarks yields a stiff enough equation of state to allow stable 2-solar-mass hybrid stars with quark cores for certain nuclear phases.
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Holographic information measures for spin-$3/2$ $\Delta$ baryons in AdS/QCD
Holographic AdS/QCD calculations of configurational entropy and complexity for Delta baryons yield Regge trajectories that organize known masses and predict additional resonances.
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Vector mesons from a holographic QCD model in $f(R)$-dilaton gravity
In Starobinsky-dilaton holographic QCD, rho meson masses match experiment for α = 10^{-8} and recover prior results at α = 0.