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arXiv · 2108.13236

High order quark number susceptibilities in hot QCD from lattice EQCD

Kari Rummukainen·Niels Schlusser
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Abstract

Building on the experience of [1], we develop a formalism to construct operators for higher derivatives of the pressure in hot QCD with respect to the quark chemical potential $μ$. We provide formulae for the operators up to the sixth derivative, and obtain continuum-extrapolated results from lattice EQCD at zero and finite $μ$ and at six different pairs of temperature T and number of massless quark flavors $n_f$. Our data is benchmarked against full-QCD lattice and perturbative results, allowing to judge the quality of the perturbative series expansion in EQCD and the dimensional reduction procedure as a whole.

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Kari Rummukainen, Niels Schlusser. 2021-08-30. High order quark number susceptibilities in hot QCD from lattice EQCD. https://doi.org/10.1103/physrevd.106.054507

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