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Lattice QCD Computational Science Workshop

Overview The purpose of this workshop is to advance our understanding of the scientific goals in the Lattice QCD community and how leadership-class computing is currently integrated in this scientific research and will need to change to meet their future computing and data requirements. Lattice QCD calculations aim to understand the physical phenomena encompassed by quantum chromod...

Hadron structure from Lattice QCD

Quark and Glue Structure of the Nucleon with Lattice QCD

Lattice QCD

The research team proposes to use the Argonne Leadership Class Computing Facility’s BlueGene/Q, Mira, and the Oak Ridge Leadership Class Computing Facility’s Cray, Titan, to address key science questions in nuclear and particle physics research, and to support and complement the major experimental programs in these areas. Focusing on the research priorities at the Energy and Intensity Frontiers...

Multi-Neutron Forces from QCD

Isotopes are elements whose nucleus has the same number of protons but different numbers of neutrons. Although neutrons are uncharged, even a small change in neutron number can significantly alter the properties and behavior of a nucleus. For example, carbon-14 is radioactive while carbon-13, with one fewer neutron, is not. Understanding isotopic differences has led to huge scientific and techn...

Parton Distribution Functions From Lattice QCD

Parton distribution functions (PDFs) encode essential information about the distribution of momentum and spin of quarks and gluons inside hadrons. Deep inelastic scattering experiments provide information on the quark PDFs of the nucleon and factorization allows one to separate a short-distance, hard sub-process, from the complex, soft structure of the nucleon. Ab initio computation of this sof...

Lattice QCD Equation of State for Moderately Large Baryon Densities: stretching the limits

One of the central goals of the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory is to probe the phase diagram of quarks and gluons, which are the building blocks of atomic nuclei. The familiar phase diagram for water indicates when we can expect to find steam, liquid water, or ice. The phase diagram for quarks and gluons is considerably more exotic, with a quark-gluon p...

The Ins and Outs of QCD

Lattice QCD Community Visits ORNL to Discuss Challenges in the Field

Users discuss future computing needs at OLCF workshop

With Supercomputing Power and an Unconventional Strategy, Scientists Solve a Next-Generation Physics Problem

Using the Titan supercomputer at the Oak Ridge Leadership Computing Facility (OLCF), a team of researchers has calculated a fundamental property of protons and neutrons, known as the nucleon axial coupling, with groundbreaking precision. Led by André Walker-Loud of the US Department of Energy’s (DOE’s) Lawrence Berkeley National Laboratory, the project also ...

Accelerating Computational Science Symposium 2012 (ACSS 2012)

[tab: Overview] Purpose: The purpose of this Symposium is to advance our understanding of how extreme-scale hybrid-computing architectures are accelerating progress in scientific research. Motivated by society's great need for advances in energy technologies, and by the demonstrated achievements and tremendous potential for computational science and engineering, a consortium of ma...

2015 OLCF Users Meeting: Reaching for the Summit Together

Reaching for the Summit Together The Oak Ridge Leadership Computing Facility (OLCF) is pleased to announce that the 2015 OLCF User Meeting will be held June 23-25, 2015, at Oak Ridge National Lab in Oak Ridge, TN. The purpose of this user meeting is to share selected computational science and engineering achievements emerging from OLCF’s user programs, to enable direct interactions am...