Oak Ridge National Laboratory

Physics Division

Physics Division Seminars

Physics Division Seminars bring us speakers on a variety of physics related subjects. Usually these are held in the Building 6008 large Conference Room, at 3:00 pm on the chosen day, but times and locations may vary. For more information, contact our seminar chairman,

Alfredo Galindo-Uribarri
Tel (Office): (865) 574-6124  (FAX): (865) 574-1268

Thu., May 23, 2013, at 3:00 p.m. (refreshments at 2:40 p.m.)

Hadronic Parity Violation, Lattice QCD, and High Performance Computing

Joseph V. Wasem, Lawrence Livermore National Laboratory
Bldg. 6008 Large Conference Room

The Delta-I=1 parity violating coupling between nucleons & pions has recently be computed for the first time directly from the underlying QCD and Electroweak field theories using the computational technique of Lattice QCD. This calculation is directly relevant to the experimental program at SNS, and has computational aspects relevant to the HPC program at ORNL through the extensive use of GPU acceleration. In this talk I will briefly describe the underlying theoretical aspects of the calculation, the various computational approaches, and the result achieved. I will then discuss the extension of this technique to the extended family of parity-violating quantities which are the subject of our current research. Time permitting, I will also explain the relationship of this research to another hot topic of experimental effort: the N-Nbar oscillation.

Contact: Alfredo Galindo-Uribarri, 574-6124