Thermodynamics of heavy quarkonium in magnetic field background

Understand

We study the effect of magnetic field on heavy quark-antiquark pair in both Einstein-Maxwell(EM) and Einstein-Maxwell-Dilaton(EMD) model.

• The interquark distance, free energy, entropy, binding energy and internal energy of the heavy quarkonium are calculated.
• It is found that the free energy suppresses and the entropy increases quickly with the increase of the magnetic field $B$.
• The binding energy vanishes at smaller distance when increasing the magnetic field, which indicates the quark-antiquark pair dissociates at smaller distance.