International Research Collaboration Uses the GPU Power of JUWELS to Advance the State-of-the-Art in Quantum Chromodynamics

Principal Investigator:
Prof. Dr. Frithjof Karsch

Universität Bielefeld, Faculty of Physics

Local Project ID:

HPC Platform used:
JUWELS Booster at JSC

Date published:

Schematic phase diagram of QCD. Indicated are the pseudo critical transition temperature (T pc) of QCD with massive quarks and the critical transition temperature (Tc ) in the massless limit. Dashed lines indicate the crossover transition, solid lines are lines of second order phase transitions, and the gray surface is a surface of first order phase transition points. A hypothetical critical point at physical quark masses is also shown. 

A research team led by Prof. Frithjof Karsch at Bielefeld University has been using the JUWELS supercomputer at the Jülich Supercomputing Centre (JSC) as part of the international HOTQCD collaboration to better understand the conditions under which particles made of protons, neutrons, and pions go through phase transitions, and how those changes impact the system’s behavior and give rise to new forms of matter, such as quark-gluon plasma.

With access to the power of the GPU-accelerated JUWELS system at JSC, the team was able to calculate the previously unattainable eighth order of expansion coefficients of the so-called Taylor series, which allows the researchers to describe material properties at high densities. The team has several manuscripts on their findings that have been published in refereed journals or await publication.

For the full report, please click here.

For the pre-print journal articles, please click here (paper 2) (paper 3).