Speaker
Description
There remains a decade-old controversy regarding two-nucleon interactions from lattice QCD at higher than physical pion masses. Initially this began as a disagreement between two entirely different methods (i.e. Lüscher’s two-particle quantization condition and the HAL QCD potential method). However, Lüscher’s quantization condition relies on the extraction of finite-volume energies, and recent improved energy determinations have called into question older results using the Lüscher method. In this talk, I will show calculations for two nucleon interactions utilizing the variational approach for extracting finite-volume energies reliably. This work includes six lattice spacings, allowing us to take a continuum limit which is found to be necessary for obtaining correct results.
