QCD Simulations, Dynamics and Medical Physics
The research covered by the expert group 1 focuses on large-scale simulations of FAIR-related physics based on transport, monte-carlo, and hydrodynamic descriptions of matter.
We study the dynamics of ultrarelativistic heavy-ion collisions with different transport- and hydrodynamics models. Here, the experts study event-by-event fluctuations, the role of multi-particle interactions, off-shell effects in the dynamics, the effects of viscosities and the QCD phase structure. Major work is being done combining the transport and hydrodynamic descriptions in a hybrid approach. This includes efforts to integrate fluctuations of the order parameters in the simulations. In the area of lattice QCD, the main issues that are investigated are the dependence of the phase transition on the fermionic formalism adopted as well as the phase structure at non-zero baryon net density. Further, lattice simulations are exploited to determine parameters of effective models of strong interaction.
Another important facet of the expert group is the expansion of supernova explosion simulations to full 3d descriptions with neutrino transport including realistic equations of state. Heavy-ion tumor radiation simulations are performed with the aim to generate a full treatment plan for clinical therapy.
On the methodological side, work is being done to improve the numerical treatment of systems of coupled partial differential equations as they occur in various simulation approaches. This includes improved implementations of multi-grid methods.
Stefan Schramm - Leader of Expert Group 1
Stefan Schramm is an adjunct professor at the institute for theoretical physics at the Goethe university. He did his studies and his PhD at Frankfurt. He was a postdoc at Caltech and Indiana University. After being a scientist in the theory group at GSI he joined the physics department of Argonne National Lab. Subsequently he became ant still is the head of the Center for Scientific Computing at Goethe university. He is a fellow at FIAS.
HIs research deals with developing model descriptions of strongly interacting matter. In this context he studies hot and dense hadronic and quark matter in heavy-ion collisions as well as in compact stars. Further activities include nuclear structure calculations of superheavy and exotic neutron-rich nuclei and hyper nuclei. In addition, he is heading a project modeling the transition of the German and European electricity generation towards a full supply based on renewable energy sources.
Principal Investigators of Expert Group 1
- Prof. Dr. Marcus Bleicher (GU Frankfurt, FIAS)
- Apl. Prof. Dr. Elena Bratkovskaya (GU Frankfurt, FIAS)
- Prof. Dr. Wolfgang Cassing (JLU Gießen)
- Prof. Dr. Marco Durante (TU Darmstadt)
- Prof. Dr. Carsten Greiner (GU Frankfurt)
- Dr. Pasi Huovinen (FIAS)
- Prof. Dr. Igor Mishustin (FIAS)
- Prof. De. Hannah Petersen (GU Frankfurt, FIAS)
- Prof. Dr. Owe Philipsen (GU Frankfurt)
- Prof. Dr. Luciano Rezzolla (GU Frankfurt)
- Prof. Dr. Stefan Schramm (GU Frankfurt, FIAS)
- Prof. Dr. Horst Stöcker (GU Frankfurt, FIAS)
- Prof. Dr. Gisela Taucher-Scholz (GSI, TU Darmstadt)
- Prof. Dr. Markus Thoma (JLU Gießen)
- Prof. Dr. Marc Wagner (GU Frankfurt)