A unified approach to hadron phenomenology at zero and finite temperatures in a hard-wall AdS/QCD model

Abstract

We propose a unified approach to study meson, nucleon and $\Delta$-baryon properties at zero and finite temperatures in the context of hard-wall AdS/QCD model. We first combine some previous works dealing with mesons and baryons separately, and introduce a new parameter~$\xi$ so that the model could give a universal description of spectrum and couplings of both sectors in a self-consistent way. All observables calculated numerically show reasonable agreement with experimental data. We then study these observables at nonzero temperature by modifying the AdS space-time into AdS-Schwartzchild space-time. Numerically solving the model, we find an interesting temperature dependence of the spectrum and the couplings. We also make a prediction on the finite temperature decay width of some nucleon and $\Delta$ excited states.

19 latex pages, 5 figures, final version for publication

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Cited by in corpus (6)

• Form factors and transverse charge and magnetization densities in the hard-wall AdS/QCD model
• Flavor Exotic Triply-Heavy Tetraquark States in AdS/QCD Potential
• Tensor meson couplings in AdS/QCD
• $\Delta$-baryon axialvector and pseudoscalar form factors, and associated PCAC relations
• Transverse charge densities of the deuteron in soft-wall AdS/QCD
• Holographic information measures for spin-$3/2$ $\Delta$ baryons in AdS/QCD