Hawk Supercomputer Helps Physicists Address the Sign Problem

Principal Investigator:
Prof. Zoltan Fodor

University of Wuppertall, Wuppertal

Local Project ID:

HPC Platform used:
Hawk at HLRS

Date published:

With the help of world-class supercomputing resources from the Gauss Centre for Supercomputing (GCS), a team of researchers led by Prof. Zoltan Fodor at the University of Wuppertal has continued to advance the state-of-the-art in elementary particle physics. Recently, the team has turned its research efforts toward addressing the so-called sign problem. While physicists generally understand how to calculate the temperature conditions necessary for materials to transition between states of liquids, gases, plasmas, and solids, they often must dig deeper to do so under a wide variety of pressure and density conditions. While certain density conditions lend themselves to straightforward calculation or are easily observable in experiments, others are much more complex, with the most complex essentially becoming a drawn-out probability game similar to flipping a coin millions of times in order to find its slight bias. With access to the Hawk supercomputer at the High-Performance Computing Center Stuttgart, the team was able to refine its computational algorithm to more accurately address the sign problem. It published its paper in Physical Review Letters.

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