Applications from Elementary Particle Physics
Here we present a choice of impressive projects from elementary particle physics which have been carried out on GCS supercomputers.
Nucleon and Meson Matrix Elements Close to the Physical Point
The validity of Quantum Field Theory (QFT) is proven beyond any reasonable doubt, but at the same time it is clear that the Standard Model is incomplete in many respects. Also, there are many aspects of the Standard Model, in particular of the QCD (Quantum Chromodynamics) sector, which are not yet understood. It is hoped that the combination of dedicated new experiments and Lattice QFT will allow to improve the understanding of these aspects.
More: Nucleon and Meson Matrix Elements Close to the Physical Point …
Next Generation Lattice QCD Simulations of the First Two Quark Generations at the Physical Point
An international team of scientists leverages the computing power of supercomputers for a very ambitious project which is embedded in the area of elementary particle interactions and in particular the strong interaction of quarks and gluons which is described theoretically by quantum chromodynamics (QCD), a relativistic quantum field theory.
More: Next Generation Lattice QCD Simulations of the First Two Quark Generations at the Physical Point …
First Lattice QCD Study of B-physics With Four Flavors of Dynamical Quarks
Researchers from the three universities of Rome, the universities of Valencia, Paris XI, Groningen, Bonn, and Berlin have formed a team to carry out an extensive study of the physics of mesons containing a beauty quark. The results of this study will allow to address issues relevant for the phenomenology of the so-called flavor sector of the Standard Model and its possible extensions to New Physics.
More: First Lattice QCD Study of B-physics With Four Flavors of Dynamical Quarks …
The Spectrum of Supersymmetric Yang-Mills Theory
In a joint project of scientists of the Universitiy of Münster, the University of Frankfurt, and of DESY, Hamburg, researchers investigate the properties of the
N = 1 supersymmetric Yang-Mills theory, a theory which has supersymmetry and is part of many models for the physics beyond the Standard Model.
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Quantum Monte Carlo Simulation of Hydrogen at High Pressure
An international team of physicists used GCS supercomputer Hermit to elucidate important aspects of the hydrogen phase diagram related to the pressure-induced molecular dissociation and metallization and to improve the treatment of electronic correlation by developing algorithms based on Quantum Monte Carlo (QMC) methods.
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Heavy Ion Phenomenology Form Lattice Simulations
A team of physicists used JSC supercomputer JUQUEEN to study the energy density, entropy, specific heat and pressure of quark gluon plasma, starting from a high temperature at its creation to a low temperature where the plasma actually freezes. Their goal: to identify the plasma's break-up point, i. e. the point when the plasma freezes and its matter is transformed into subatomic particles.
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2+1+1 Lattice QCD Calculations With HEX Smeared Clover Fermions
Supercomputer resources of GCS enable physicists to solve the equations of QCD on a large enough and simultaneously fine enough lattice to accurately compute the effects of the charm quark and predict the masses of short-lived particles it is contained in.
More: 2+1+1 Lattice QCD Calculations With HEX Smeared Clover Fermions …
Fluctuations of Conserved Charges in the Quark Gluon Plasma
Leveraging the vast computing power of HPC system JUQUEEN of JSC, an international team of physicists aims on a model independent determination of the freeze-out temperature and density of Quark Gluon Plasma (QGP), based on the fundamental equations of the theory of strongly interacting matter, Quantum Chromodynamics (QCD).
More: Fluctuations of Conserved Charges in the Quark Gluon Plasma …
The dominance of matter over antimatter in our universe is one of the unsolved riddles of present day physics. During the early phases of our universe, matter must have been produced predominantly over antimatter, but the only such process we currently know only affects quarks, the fundamental constituents of the atomic nucleus, and does not provide enough matter dominance.
More: Matter-Antimatter Asymmetry …