Düsseldorf 2007 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
P: Fachverband Plasmaphysik
P 6: Grundlegende Probleme, Theorie
P 6.5: Vortrag
Montag, 19. März 2007, 15:45–16:00, 6F
Plasma instabilities in the quark gluon plasma — •Andreas Ipp1, Anton Rebhan2, Paul Romatschke3, and Michael Strickland4 — 1Max-Planck-Institut für Kernphysik, Heidelberg — 2Technische Universität Wien — 3University of Washington, Seattle — 4Frankfurt Institute for Advanced Studies
It has been pointed out a while ago that plasma instabilities, in particular the so-called Weibel or filamentary instabilities from ordinary electromagnetic plasmas, may play a role also in the quark-gluon plasma that is produced in relativistic heavy-ion collisions at CERN-SPS, RHIC, or soon the LHC. Only recently it has been proposed that the non-Abelian generalization of plasma instabilities to strong interactions may provide an explanation for the fast isotropization of the quark-gluon plasma and specifically an explanation for the recent puzzle of fast apparent thermalization that is observed in such experiments. There, the instabilities arise necessarily through the initial momentum anisotropy generated by the rapidly expanding plasma.
We treat the instabilities by gauge-covariant collisionless Boltzmann-Vlasov equations for an effective field theory for the soft momentum modes of the gauge fields. These soft modes pertain collective dynamics such as Debye screening, finite plasma frequency, and magnetic instabilities of anisotropic plasmas. In this work, we extend the previous work of Ref. [1] to treat full 3+1 dimensional SU(3) simulations. A new parallel implementation of the code allows to study larger lattices and therefore in more detail the late time behavior of the instabilities.
[1] A. Rebhan, P. Romatschke, M. Strickland, JHEP, 09:041, 2005.