Energy gain of heavy quarks by fluctuations in the QGP
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The collisional energy gain of a heavy quark due to chromo-electromagnetic field fluctuations in a quark-gluon plasma is investigated. The field fluctuations lead to an energy gain of the quark for all temperatures and velocities. The net effect is a reduction of the collisional energy loss by 15-40% for parameters relevant at RHIC energies.
6 pages, 4 figures, extended version, accepted for publication in Phys. Rev. C
6 pages, 4 figures, extended version, accepted for publication in Phys. Rev. C