Computational Physics and Lattice QCD

Since 2009, we are applying computational methods to investigate and understand quantum systems using non-perturbative methods. We are located at the University of Bonn in the Helmholtz-Institut für Strahlen- und Kernphysik.
A particular focus of our reserach lies on the simulation of quantum chromodynamics (QCD), the theory of strong interactions using Lattice QCD: among others, we are working on hadron-hadron interactions, algorithm development, hadronic parity violation, and semileptonic decays.
Another, more recent, focus are lower dimensional systems like graphene. Here we use stochastic methods as well as tensor networks or quantum computing.
In the context of quantum computing we are also interested in how to digitise the lattice QCD Hamiltonian for efficient usage on a quantum device.

We need to use high performance computing systems for our research. Many of these systems nowadays comprise GPUs as energy efficient accelerators. GPUs are also the basis for our HPC cluster QBiG. The software which is required for our research is developed by ourselves. We make much of this software publicly available.

We are receiving third party funding among others from the DFG as part of the CRC110 and, very recently, the CRC1639 NuMeriQS, see Funding.


Much of the research in our groups is performed as part of the Extended Twisted Mass collaboration (ETMC).
ETMC has more than 40 members in research groups scattered all over the world including China, Cyprus, Germany, Italy, Poland, USA.