### Free Energy of a Heavy Quark-Antiquark Pair in a Thermal Medium from AdS/CFT

Ewerz C, Kaczmarek O, Samberg A (2018)
JOURNAL OF HIGH ENERGY PHYSICS 2018(3): 088.

Zeitschriftenaufsatz | Veröffentlicht | Englisch

1.16 MB
Autor*in
Ewerz, Carlo; Kaczmarek, OlafUniBi; Samberg, Andreas
Abstract / Bemerkung
We study the free energy of a heavy quark-antiquark pair in a thermal medium using the AdS/CFT correspondence. We point out that a commonly used prescription for calculating this quantity leads to a temperature dependence in conflict with general properties of the free energy. The problem originates from a particular way of subtracting divergences. We argue that the commonly used prescription gives rise to the binding energy rather than the free energy. We consider a different subtraction procedure and show that the resulting free energy is well-behaved and in qualitative agreement with results from lattice QCD. The free energy and the binding energy of the quark pair are computed for N = 4 supersymmetric Yang-Mills theory and several non-conformal theories. We also calculate the entropy and the internal energy of the pair in these theories. Using the consistent subtraction, we further study the free energy, entropy, and internal energy of a single heavy quark in the thermal medium for various theories. Also here the results are found to be in qualitative agreement with lattice QCD results.
Erscheinungsjahr
2018
Zeitschriftentitel
JOURNAL OF HIGH ENERGY PHYSICS
Band
2018
Ausgabe
3
Art.-Nr.
088
ISSN
1029-8479
Finanzierungs-Informationen
Open Access publishing charge funded by SCOAP$^3$ – Sponsoring Consortium for Open Access Publishing in Particle Physics and Bielefeld University.
Page URI
https://pub.uni-bielefeld.de/record/2913349

### Zitieren

Ewerz C, Kaczmarek O, Samberg A. Free Energy of a Heavy Quark-Antiquark Pair in a Thermal Medium from AdS/CFT. JOURNAL OF HIGH ENERGY PHYSICS. 2018;2018(3): 088.
Ewerz, C., Kaczmarek, O., & Samberg, A. (2018). Free Energy of a Heavy Quark-Antiquark Pair in a Thermal Medium from AdS/CFT. JOURNAL OF HIGH ENERGY PHYSICS, 2018(3), 088. doi:10.1007/JHEP03(2018)088
Ewerz, C., Kaczmarek, O., and Samberg, A. (2018). Free Energy of a Heavy Quark-Antiquark Pair in a Thermal Medium from AdS/CFT. JOURNAL OF HIGH ENERGY PHYSICS 2018:088.
Ewerz, C., Kaczmarek, O., & Samberg, A., 2018. Free Energy of a Heavy Quark-Antiquark Pair in a Thermal Medium from AdS/CFT. JOURNAL OF HIGH ENERGY PHYSICS, 2018(3): 088.
C. Ewerz, O. Kaczmarek, and A. Samberg, “Free Energy of a Heavy Quark-Antiquark Pair in a Thermal Medium from AdS/CFT”, JOURNAL OF HIGH ENERGY PHYSICS, vol. 2018, 2018, : 088.
Ewerz, C., Kaczmarek, O., Samberg, A.: Free Energy of a Heavy Quark-Antiquark Pair in a Thermal Medium from AdS/CFT. JOURNAL OF HIGH ENERGY PHYSICS. 2018, : 088 (2018).
Ewerz, Carlo, Kaczmarek, Olaf, and Samberg, Andreas. “Free Energy of a Heavy Quark-Antiquark Pair in a Thermal Medium from AdS/CFT”. JOURNAL OF HIGH ENERGY PHYSICS 2018.3 (2018): 088.
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2020-10-29T20:00:00Z

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### Quellen

arXiv: 1605.07181

Inspire: 1465514

SCOAP3: 24371