Static quark anti-quark interactions at zero and finite temperature QCD. II.Quark anti-quark internal energy and entropy

Abstract

We analyze the change in free energy, internal energy and entropy due to the presence of a heavy quark anti-quark pair in a QCD heat bath. The internal energies and entropies are introduced as intensive observables calculated through thermal derivatives of the QCD partition function containing additional static color sources. The quark anti-quark internal energy and, in particular, the entropy clearly signal the phase change from quark confinement below and deconfinement above the transition and both observables are introduced such that they survive the continuum limit. The intermediate and large distance behavior of the energies reflect string breaking and color screening phenomena. This is used to characterize the energies which are needed to dissolve heavy quarkonium states in a thermal medium. Our discussion supports recent findings which suggest that parts of the quarkonium systems may survive the phase transition and dissolve only at higher temperatures.

arXiv comment11 pages, 9 figures, revtex4

Cited by in corpus (12)

• Real-time static potential in hot QCD
• Charmonium and bottomonium production in heavy-ion collisions
• Polyakov loop in 2+1 flavor QCD from low to high temperatures
• Quarkonium at finite temperature: Towards realistic phenomenology from first principles
• Deconfinement and quark-gluon plasma
• Entropic destruction of a moving heavy quarkonium
• Free Energy of a Heavy Quark-Antiquark Pair in a Thermal Medium from AdS/CFT
• Static $\bar{Q}Q$ Potentials and the Magnetic Component of QCD Plasma near $T_c$
• The Charmonium Potential at Non-Zero Temperature
• A Heavy Quark-Antiquark Pair in Hot QCD
• Thermal width and entropic force of a moving quarkonia with charged deformed AdS background
• Are there flux tubes in quark-gluon plasma?