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Lattice QCD constraints on the heavy quark diffusion coefficient
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abstract
We report progress towards computing the heavy quark momentum diffusion coefficient from the correlator of two chromo-electric fields attached to a Polyakov loop in pure SU(3) gauge theory. Using a multilevel algorithm and tree-level improvement, we study the behavior of the diffusion coefficient as a function of temperature in the wide range $1.1 < T / T_c < 10^4$ in order to compare it to perturbative expansions at high temperature. We find that within errors the lattice results are remarkably compatible with the next-to-leading order perturbative result.
Forward citations
Cited by 3 Pith papers
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Perturbative and nonperturbative properties of heavy quark transport in a thermal SU(3) gluon plasma
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Adjoint chromoelectric correlators for heavy quarkonium diffusion
First lattice measurement of adjoint chromoelectric correlators shows they scale with the fundamental heavy-quark diffusion correlator by the perturbative factors 5/4 and 9/4.
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Coherent State Path Integral Reveals Unexpected Vacuum Structure in Thermal Field Theory
A coherent-state derivation of the thermal partition function yields extra vacuum and mass-coupling terms that the authors claim are novel, though these terms reflect the chosen operator ordering.
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