A QCD Debye mass in a broad temperature range

Abstract

The Debye mass sets a scale for the screening of static charges and the scattering of fast charges within a gauge plasma. Inspired by its potential cosmological applications, we determine a QCD Debye mass at 2-loop order in a broad temperature range (1 GeV ... 10 TeV), demonstrating how quark mass thresholds get smoothly crossed. Along the way, integration-by-parts identities pertinent to massive loops at finite temperature are illuminated.

18 pages. v2: minor clarifications

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• Theoretical uncertainties for cosmological first-order phase transitions
• Perturbative Thermal QCD: Formalism and Applications
• Gravitational wave background from Standard Model physics: Complete leading order
• Real scalar phase transitions: a nonperturbative analysis
• Chiral spin symmetry and the QCD phase diagram
• Strong electroweak phase transition in $t$-channel simplified dark matter models
• Stop comparing resummation methods
• The force-force-correlator in hot QCD perturbatively and from the lattice
• Integrating by parts at finite density
• Factorizing two-loop vacuum sum-integrals
• Lattice QCD study of static quark and antiquark correlations at finite $T$ via entanglement entropies
• Computing singlet scalar freeze-out with plasmon and plasmino states
• Soft contributions to the thermal Higgs width across an electroweak phase transition
• The High-Temperature Expansion of the Thermal Sunset
• Energy and momentum dependence of the soft-axion interaction rate
• High order quark number susceptibilities in hot QCD from lattice EQCD
• Hard thermal contributions to phase transition observables at NNLO