Conveners
Theory developments
- Jean-Yves Ollitrault (IPhT Saclay)
Peter Arnold
(University of Virginia)
27/05/2011, 15:00
New theoretical developments
Parallel
A 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...
Andrej Ficnar
(Columbia University, New York, USA)
27/05/2011, 15:20
Jets
Parallel
We 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...
Prof.
Dirk Rischke
(Institut fur Theoretische Physik, Goethe University, and Frankfurt Institute for Advanced Studies (FIAS), 60438 Frankfurt am Main, Germany)
27/05/2011, 15:40
New theoretical developments
Parallel
Using 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...
Derek Teaney
(Stony Brook University)
27/05/2011, 16:00
New theoretical developments
Parallel
We 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...
Dr
Olaf Kaczmarek
(University of Bielefeld)
27/05/2011, 16:20
Electromagnetic probes
Parallel
We 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...
Dr
Abhijit Majumder
(The Ohio State University)
27/05/2011, 16:40
Jets
Parallel
We 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...
