Classical Strongly Coupled QGP: VII. Energy Loss

Details Classical Strongly Coupled QGP: VII. Energy Loss Classical Strongly Coupled QGP: VII. Energy Loss

2009-10-08

arxiv.org/abs/0910.1548v2

Phys.Rev.C82:064904,2010

Physics

Nuclear Physics

Nuclear Theory

18 pages, 15 figures. v2: added references, changed title, replaced figures for Fig. 7, corrected typos

Scientific paper

10.1103/PhysRevC.82.064904

We use linear response analysis and the fluctuation-dissipation theorem to derive the energy loss of a heavy quark in the SU(2) classical Coulomb plasma in terms of the $l=1$ monopole and non-static structure factor. The result is valid for all Coulomb couplings $\Gamma=V/K$, the ratio of the mean potential to kinetic energy. We use the Liouville equation in the collisionless limit to assess the SU(2) non-static structure factor. We find the energy loss to be strongly dependent on $\Gamma$. In the liquid phase with $\Gamma\approx 4$, the energy loss is mostly metallic and soundless with neither a Cerenkov nor a Mach cone. Our analytical results compare favorably with the SU(2) molecular dynamics simulations at large momentum and for heavy quark masses.

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