Jet Tomography versus Jet Holography of the QGP produced at RHIC and LHC

Miklos Gyulassy

Columbia University

Recent theoretical developments as well as data on the nuclear modification of jets from RHIC and LHC will be discussed.  Observables capable of discriminating between perturbative QCD based jet tomographic models and string theory inspired gravity dual holographic models of high pT jet medium interactions will be pointed out.  The great sensitivity of current data interpretations to initial state nuclear shadowing/saturation physics will be emphasized that will require dedicated p+Pb control data from LHC in the near future.