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Chiral Symmetry Breaking in Soft-Wall AdS/QCD
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We show how to incorporate chiral symmetry breaking in the soft-wall version of the AdS/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.
Forward citations
Cited by 8 Pith papers
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Spectral Functions of $J/\psi$ Meson in Rotating Thermal Background from Holography
In a rotating thermal medium modeled by soft-wall holography, J/ψ spectral peaks split by −ΩJ_z along the rotation axis and acquire projection-dependent distortions for transverse momentum.
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Effects of Born-Infeld Electrodynamics on Chiral Symmetry Restoration and Meson Susceptibilities in Holographic QCD
In a soft-wall holographic QCD model on a Born-Infeld black hole, stronger bulk nonlinearity shifts the chiral phase boundary to higher temperatures without changing the transition order.
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Probing the chiral and $U(1)$ axial symmetry restoration via meson susceptibilities in holographic QCD
In a soft-wall holographic QCD model, chiral symmetry restores at ~155 MeV while the U(1) axial symmetry restores near 190 MeV — a separation the authors present despite an admitted mismatch with lattice QCD below 175 MeV.
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Scaling functions in the soft-wall AdS/QCD models
Soft-wall AdS/QCD models reproduce mean-field chiral scaling functions and follow a T_c scaling law whose slope, tuned by a modified potential, can approach Dyson-Schwinger results.
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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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Deformed AdS/QCD, mesonic mass spectra, and DCE: Still a margin for heavier resonances
Heavier meson masses are extrapolated from polynomial fits to entropy values of known resonances, with several matches to unconfirmed PDG states.
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Pion structure in Holographic QCD
A holographic model with effective linear confinement and gluon condensation simultaneously reproduces the pion mass spectrum and form factors in reasonable agreement with experiment and lattice QCD.
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