Work

Polyakov loop correlator in perturbation theory

Year: 2017

Type: article

Abstract: We study the Polyakov loop correlator in the weak coupling expansion and show how the perturbative series reexponentiates into singlet and adjoint contributions. We calculate the order ${g}^{7}$ correction to the Polyakov loop correlator in the short distance limit. We show how the singlet and adjoint free energies arising from the reexponentiation formula of the Polyakov loop correlator are related to the gauge invariant singlet and octet free energies that can be defined in pNRQCD, namely we find that the two definitions agree at leading order in the multipole expansion, but differ at first order in the quark-antiquark distance.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/physrevd.96.014025

Authors: Matthias Berwein, Nora Brambilla, Péter Petreczky, Antonio Vairo

Institutions: Tohoku University, Technical University of Munich, Brookhaven National Laboratory

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: U.S. Department of Energy, Deutsche Forschungsgemeinschaft, Japan Society for the Promotion of Science

Awards: G241279073, G4780651024