The CRC1639 NuMeriQS is an interdisciplinary collaborative research centre funded by the DFG bringing together scientists from theoretical chemistry and theoretical physics with numerical mathematicians and computer scientists. It aims to link up numerical methods developed in physics and chemistry and to combine these with the latest developments in mathematics and computer science.

A complete description and understanding of nature inevitably requires quantum theory. The study of quantum systems is therefore of paramount importance, but also highly challenging, e.g. due to the exponential growth of the state space with system size or due to long-range interactions. Computational methods have evolved, often in the absence of alternatives, into first-rate and powerful tools to address these challenges. Nevertheless, many problems are just at or beyond the threshold of feasibility. The CRC NuMeriQS brings together scientists from theoretical particle, nuclear and condensed matter physics and theoretical chemistry with mathematicians and computer scientists. They will all work together in an interdisciplinary effort to advance our understanding of the structure and dynamics in quantum systems, by enabling progress on the methodological, algorithmic and HPC implementation fronts in a cross-field collaboration. NuMeriQS aims to combine the advantages of different approaches to mitigate their respective weaknesses, creating a strategy with enormous potential for transformative advances in both physics and chemistry. The initiative comes at a time when potentially transformative technologies are becoming available, such as the first exascale computing installations, or are promising to become available, such as digital quantum computers. These new technologies represent opportunities NuMeriQS aims to utilize in a collaborative effort to address the challenges and enable transformative advances in each field.

JSC, with its expertise in High Performance and Quantum Computing plays a pivotal role in making NuMeriQS a success. At JSC, the SDL Numerical Quantum Field Theory and the RG Next Generation Architectures and Prototypes contribute in particular to the projects B02 “Towards Lattice Field Theory at the Exascale Frontier”, B06 “Multi-Level Iterative Solvers for Lattice Dirac Operators”, and Z02 “Central Supercomputing, Codesign and Performance Optimisation Support”.