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Quark Mass Dependence of Heavy Quark Diffusion Coefficient from Lattice QCD
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abstract
We present the first study of the quark mass dependence of the heavy quark momentum and spatial diffusion coefficients using lattice QCD with light dynamical quarks corresponding to a pion mass of 320 MeV. We find that, for the temperature range 195 MeV $<T<$ 293 MeV, the spatial diffusion coefficients of the charm and bottom quarks are smaller than those obtained in phenomenological models that describe the $p_T$ spectra and elliptic flow of open heavy flavor hadrons.
Forward citations
Cited by 4 Pith papers
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Out-of-equilibrium corrections at initialization and freeze-out make computed charm-hadron yields independent of the charm diffusion coefficient and define the reliable transverse-momentum range.
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Perturbative and nonperturbative properties of heavy quark transport in a thermal SU(3) gluon plasma
In a gluon plasma near Tc, a temperature-dependent background color field suppresses heavy-quark collisional energy loss and momentum diffusion relative to perturbative QCD.
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The quark-gluon plasma is best described as a strongly coupled liquid of massive, very short-lived quark and gluon quasiparticles, with sound (phonon) modes becoming the most well-defined collective excitation at low momenta.
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