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Quark mass thresholds in QCD thermodynamics

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arxiv hep-ph/0603048 v2 pith:KAFZAJAT submitted 2006-03-06 hep-ph

classification hep-ph
keywords quarkmasstemperaturetemperaturesthresholdsbasiccapacitycharm
verification ladder T0 review T1 audit T2 compute T3 formal
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We discuss radiative corrections to how quark mass thresholds are crossed, as a function of the temperature, in basic thermodynamic observables such as the pressure, the energy and entropy densities, and the heat capacity of high temperature QCD. The indication from leading order that the charm quark plays a visible role at surprisingly low temperatures, is confirmed. We also sketch a way to obtain phenomenological estimates relevant for generic expansion rate computations at temperatures between the QCD and electroweak scales, pointing out where improvements over the current knowledge are particularly welcome.

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Cited by 3 Pith papers

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