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
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.
© SIF, Springer-Verlag Berlin Heidelberg, 2016