consistent theoretical description of gluon, light quark, and heavy flavor sup- pression these groups’ work was extended. Zhang, Wang, and Wang [285] and Armesto, Salgado, and Wiedemann [270] included heavy quark mass effects in the WWGO-Z and BDMPS-Z-ASW formalisms. Djordjevic and Gyulassy included both the effects of a heavy quark jet and a gluon mass term in D-GLV [278]. 

Since then Arnold, Moore, and Yaffe [133, 134, 286] developed a thermal field theoretic derivation of energy loss in which dominant and subdominant contributions are carefully tracked; [299] found the result to be similar to BDMPS. A large advantage of this formalism is its simultaneous treatment of both gluon and photon bremsstrahlung, providing an added experimental con- sistency check. Unfortunately their use of asymptotic states neglects the large interference effects from the initial production radiation, making comparison to data problematic. 

Besides in-medium inelastic energy loss two other radiation effects have been studied: transition radiation and Ter-Mikayelian radiation reduction. Transition radiation occurs in E&M when a relativistic charged particle propa- gates through an inhomogeneous medium, in particular the boundary between two spaces with different electrical properties [300, 301]. In heavy ion colli- sions just such a boundary forms between the deconfined QGP medium and the vacuum; [302] quantified the extra energy loss caused in this transition and detailed its regulation of infrared divergences ordinarily absorbed into DGLAP evolution. 

