A gauge invariant Debye mass and the complex heavy-quark potential

被引：36

作者：

Burnier, Yannis ^{[1
]}

Rothkopf, Alexander ^{[2
]}

机构：

[1] Ecole Polytech Fed Lausanne, Inst Theoret Phys, CH-1015 Lausanne, Switzerland

[2] Heidelberg Univ, Inst Theoret Phys, Philosophenweg 12, D-69120 Heidelberg, Germany

来源：

PHYSICS LETTERS B | 2016年 / 753卷

关键词：

Debye mass; Heavy quarkonium; Complex potential; LATTICE QCD;

D O I：

10.1016/j.physletb.2015.12.031

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Following the original idea of Debye, we define and extract a gauge-invariant screening mass from the complex static in-medium heavy-quark potential V-Q (Q) over bar, recently obtained from lattice QCD. To this end we derive a formula using concepts from both effective-and classical field theories that faithfully reproduces both the screened real-and the imaginary part of the lattice potential with a single temperature dependent fit parameter m(D)(T). Using values of the real part of V-Q (Q) over bar in a gluonic medium, we obtain Debye masses compatible with HTL perturbation theory. (C) 2015 The Authors. Published by Elsevier B.V.

引用

页码：232 / 236

页数：5