Eur. Phys. J. A (2016) 52: 122
https://doi.org/10.1140/epja/i2016-16122-2

Regular Article - Theoretical Physics

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

¹ School of Physics and State Key Laboratory of Nuclear Physics and Technology, 100871, Beijing, China
² Collaborative Innovation Center of Quantum Matter, Beijing, China
³ Center for High Energy Physics, Peking University, 100871, Beijing, China

^* e-mail: lagrenge@pku.edu.cn

Received: 27 January 2016
Revised: 27 February 2016
Accepted: 2 March 2016
Published online: 10 May 2016

Abstract

We propose a unified approach to study meson, nucleon and -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 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 excited states.