Conveners
Theory developments
- Jean-Yves Ollitrault (IPhT Saclay)
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Peter Arnold (University of Virginia)27/05/2011, 15:00New theoretical developmentsParallelA very basic theoretical question is: How far does a high-energy excitation travel in a quark-gluon plasma, and how does that distance scale with energy? In weak coupling, the stopping distance scales with energy as E^(1/2), up to logarithms. In strongly-coupled plasmas with gravity duals, theorists have found that the maximum stopping distance scales instead like E^(1/3). In the latter...Go to contribution page
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Andrej Ficnar (Columbia University, New York, USA)27/05/2011, 15:20JetsParallelWe investigate the connection between the conformal anomaly in the confinement transition region and quenching of heavy and light quarks in heavy ion collisions at RHIC and LHC by using a new non-conformal holographic model with a dilaton field. Holographic thermodynamic properties of the sQGP are constrained by lattice QCD calculations. The string drag force model of jets is generalized to...Go to contribution page
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Prof. Dirk Rischke (Institut fur Theoretische Physik, Goethe University, and Frankfurt Institute for Advanced Studies (FIAS), 60438 Frankfurt am Main, Germany)27/05/2011, 15:40New theoretical developmentsParallelUsing linear response theory, we derive [1] conditions for the retarded Green's function so that the linearized equation of motion of a dissipative current is reduced to a relaxation-type equation of the Israel-Stewart type [2]. We prove that this reduction can be done, if the singularity of the retarded Green's function closest to the origin is a simple pole on the imaginary axis. The...Go to contribution page
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Derek Teaney (Stony Brook University)27/05/2011, 16:00New theoretical developmentsParallelWe give a simple recipe for computing dissipation and fluctuations (commutator and anti-commutator correlation functions) for non-equilibrium black hole geometries. The recipe formulates Hawking radiation as an initial value problem, and is suitable for numerical work. We show how to package the fluctuation and dissipation near the event horizon into correlators on the stretched...Go to contribution page
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Dr Olaf Kaczmarek (University of Bielefeld)27/05/2011, 16:20Electromagnetic probesParallelWe report on a continuum extrapolation of the vector current correlation function for light valence quarks in the deconfined phase of quenched QCD. This is achieved by performing a systematic analysis of the influence of cut-off effects on light quark meson correlators at T=1.5 Tc using clover improved Wilson fermions [1]. In addition new results at 1.2 and 3.0 Tc will be presented. The first...Go to contribution page
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Dr Abhijit Majumder (The Ohio State University)27/05/2011, 16:40JetsParallelWe calculate the modification of hard jets in dense extended matter in the higher-twist formalism. The single gluon emission spectrum from a hard quark due to multiple scattering in a medium is evaluated as a power series in inverse powers of the virtuality of the hard jet. Retaining corrections up to next to leading power, we calculate the medium modified fragmentation function by resumming...Go to contribution page