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 VQQ¯, recently obtained from lattice QCD. To this end we derive a formula using concepts from both effective- and classical field theories that faithfu...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2016-02-01
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| Series: | Physics Letters B |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S037026931500979X |
| Summary: | Following the original idea of Debye, we define and extract a gauge-invariant screening mass from the complex static in-medium heavy-quark potential VQQ¯, 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 mD(T). Using values of the real part of VQQ¯ in a gluonic medium, we obtain Debye masses compatible with HTL perturbation theory. |
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| ISSN: | 0370-2693 1873-2445 |