Speaker
Dr
Arjun Gambhir
(Lawrence Livermore National Laboratory)
Description
The Feynman-Hellmann method, as implemented by Bouchard et al. [1612.06963], has recently been used successfully to determine the nucleon axial charge. A limitation of the method was the restriction to a single operator and a single momentum during the computation of each "Feynman-Hellmann" propagator. Here we discuss enhancements to the method that relax this constraint and we demonstrate the successful implementation of the improved version with a reproduction of the axial charge on a test ensemble.
Primary author
Dr
Arjun Gambhir
(Lawrence Livermore National Laboratory)