Pieter Maris

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Computational resource availability often changes during the course of execution of an application. This is especially true in modern multi-user cluster environments where users can run many high-performance applications simultaneously which share resources such as Processing Elements (PEs), I/O, main memory, network. In such a scenario, it would be greatly(More)
The structure and reactions of light nuclei represent fundamental and formidable challenges for microscopic theory based on realistic strong interaction potentials. Several ab initio methods have now emerged that provide nearly exact solutions for some nuclear properties. The ab initio no core shell model (NCSM) and the no core full configuration (NCFC)(More)
The ladder-rainbow truncation of the set of Dyson–Schwinger equations is used to study light mesons. The parameters in the effective interaction are constrained by the chiral condensate and fπ; the current quark masses are fitted to mπ and m K. The dressed quark propagators are in qualitative agreement with recent lattice-QCD results at low q 2 while having(More)
The UNEDF project was a large-scale collaborative effort that applied high-performance computing to the nuclear quantum many-body problem. UNEDF demonstrated that close associations among nuclear physicists, mathematicians , and computer scientists can lead to novel physics outcomes built on algorithmic innovations and computational developments. This(More)