Two high impact computer science projects that include the Stony Brook University faculty of the Department of Physics and Astronomy obtained access to the US Department of Energy (DOE) Office of Science (DOE) supercomputers for 2022 as part of its INCITE (Innovative and Novel Computational Impact on Theory and Experiment) program. With these awards, research teams will be able to gain access to top-class supercomputers at DOE’s Argonne and Oak Ridge National Laboratories.
The first project, “Approach to exascale models of astrophysical explosions”, includes the principal investigator Professor Michael Zingale and co-researchers Associate Professor Alain calder, postdoctoral associate Alice Harpole and doctoral student Maria Barrios Sazo.
Building on more than a decade of work, this project aims to produce models of combustion and flame propagation on neutron stars as models for X-ray bursts (XRB), to study fusions dwarfs and the role of magnetic fields, and to explore the end state of massive convection of stars. These are all multiscale, multiphysical problems whose calculation requires the coupling of hydrodynamics, magnetic fields, reactions, gravity and diffusion. The team’s XRB simulations will provide insight into the nucleosynthesis of the rapid proton capture process, connect to observations, and probe the structure of the underlying neutron star. A suite of white dwarf fusions, with and without magnetic fields, will be modeled, allowing the team to probe this system as a possible progenitor for Type Ia supernovae. Finally, massive star research will provide an important contribution (and an open simulation framework) to the core collapse modeling community.
Assistant Professor Sergey Syritsyn is co-investigator of the other project, “Internal structure of the strong interaction of Nambu-Goldstone bosons”. This project aims to perform precision QCD calculations on a lattice of internal pion and kaon structures (Nambu-Goldstone bosons in strong interactions) in order to determine their electromagnetic form factors, the distribution amplitudes of the Fock space. , parton distribution functions and generalized parton distributions. These calculations are intended to provide experimental programs, such as the Jefferson Lab 12 GeV upgrade and the future electron-ion collider, with comparisons and predictions. The results will help answer fundamental questions regarding the spontaneous disruption of chiral symmetry in strong interactions, violation of flavor symmetry, color confinement and the origin of hadron mass. In addition, the distribution amplitudes are important inputs for the production processes of deeply virtual mesons which are used to map 3D images of the proton.
Find out more about the INCITE program