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

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.


Published in:
Physics Letters B, 753, 232-236
Year:
2016
Publisher:
Amsterdam, Elsevier
ISSN:
0370-2693
Keywords:
Laboratories:




 Record created 2016-04-01, last modified 2018-09-13


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