Static and non-static vector screening masses

Abstract

Thermal screening masses of the conserved vector current are calculated both in a weak-coupling approach and in lattice QCD. The inverse of a screening mass can be understood as the length scale over which an external electric field is screened in a QCD medium. The comparison of screening masses both in the zero and non-zero Matsubara frequency sectors shows good agreement of the perturbative and the lattice results. Moreover, at $T\approx 508\mathrm{MeV}$ the lightest screening mass lies above the free result ($2\pi T$), in agreement with the $\mathcal{O}(g^2)$ weak-coupling prediction.

arXiv comment7 pages, 6 figures, talk presented at 34th annual International Symposium on Lattice Field Theory, 24-30 July 2016, University of Southampton, UK

References in corpus (10)

• The strange quark mass and Lambda parameter of two flavor QCD
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• O(a) improvement of lattice QCD with two flavors of Wilson quarks
• The non-Abelian Debye screening length beyond leading order
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• Vector screening masses in the quark-gluon plasma and their physical significance