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arXiv · 1611.09689

Static and non-static vector screening masses

Bastian B. Brandt·Anthony Francis·Harvey B. Meyer·Aman Steinberg·Kai Zapp
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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.

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Bastian B. Brandt, Anthony Francis, Harvey B. Meyer, Aman Steinberg, Kai Zapp. 2016-11-29. Static and non-static vector screening masses. https://arxiv.org/abs/1611.09689

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