In a Bayesian holographic QCD model, rising temperature and baryon chemical potential lower the quarkonium dissociation distance and make binding energy vanish at smaller separation, promoting dissociation.
Doubly-heavy tetraquark at finite temperature in a holographic model
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abstract
In this paper, we employ gauge/gravity duality to investigate the string breaking and melting of doubly-heavy tetraquark that includes two heavy quarks and two light antiquarks in a holographic model at finite temperature. Firstly, we investigate four configurations of $\rm{QQ\bar{q}\bar{q}}$ in the confined phase and consider different separation distances of the heavy quarks at varying temperatures. At high temperature, $\rm{QQ\bar{q}\bar{q}}$ melts at certain distances and the confined quarks are released. As the temperature continues to increase, some configurations of doubly-heavy tetraquark can not exist. Furthermore, we investigate three decay modes of $\rm{QQ\bar{q}\bar{q}}$ and compare the potential energy of $\rm{QQ\bar{q}\bar{q}}$ with that of $\rm{QQq}$ at finite temperature .
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Thermodynamics of Heavy Quarkonium in a Bayesian Holographic QCD model
In a Bayesian holographic QCD model, rising temperature and baryon chemical potential lower the quarkonium dissociation distance and make binding energy vanish at smaller separation, promoting dissociation.