Abstract
Using the AdS/CFT duality, we study the jet quenching parameter and drag force in a deformed AdS background with backreaction due to the gluon condensate. It is shown that the two quantities both decrease as the value of the gluon condensate decreases in the deconfined phase. In addition, near the critical temperature T_c of the QCD deconfinement transition, the gluon condensate has a stronger effect on the drag force than the jet quenching parameter.
Highlights
It is believed that the heavy ion collisions at Relativistic Heavy Ion Collider (RHIC) and Large Hadron Collider (LHC) have produced a new state of matter, the so-called quark gluon plasma (QGP) [1,2,3]
The purpose of this paper is to study the effect of gluon condensate on the jet quenching parameter and the drag force
One might notice one difference between the right panel of Figs. 2 and 3: for T = 170 MeV, the slope of f / f0 is bigger than that of q/q0, which means that, near Tc, the gluon condensate has a stronger effect on the drag force than the jet quenching parameter
Summary
It is believed that the heavy ion collisions at Relativistic Heavy Ion Collider (RHIC) and Large Hadron Collider (LHC) have produced a new state of matter, the so-called quark gluon plasma (QGP) [1,2,3]. The purpose of this paper is to study the effect of gluon condensate on the jet quenching parameter and the drag force. The gluon condensate dependence of the heavy quark potential has been studied in [52] and the results show that the potential becomes deeper as the gluon condensate decreases in the deconfined phase and the mass of the quarkonium drops near Tc. Here motivated by [52], we study the effect of the gluon condensate on the jet quenching parameter and the drag force. The jet quenching parameter and the drag force represent two different mechanisms for the in-medium energy loss. 3 and 4, we study the effect of gluon condensate on the jet quenching parameter and the drag force, in turn. The last part is devoted to our conclusion and a discussion
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