UNC Physics Colloquium – Amy Nicholson
October 18 @ 3:30 pm - 4:30 pm
UNC Physics Colloquium
Amy Nicholson, University of North Carolina at Chapel Hill
“The ties that bind: understanding nuclear forces from lattice QCD”
There are many open questions in nuclear physics which only lattice QCD may be able to answer. One example is understanding the nature and origin of the fine-tuning of interactions between nucleons and nuclei observed in nature. The first step toward building a bridge between the underlying theory, QCD, and nuclear observables is full control over one- and two-nucleon systems. While enormous strides have been made in recent years in precision calculations of single-nucleon observables, the history of two-nucleon calculations has generated more questions than answers. In particular, there is a controversy in the literature between calculations performed using different theoretical techniques, even for calculations far from the physical point, chosen due to the exponentially simpler computational properties. In this talk, I will present the history and challenges behind one- and two-nucleon calculations in lattice QCD, as well as advances in understanding and controlling the associated systematics.
This lecture will be both in-person and available via Zoom: https://unc.zoom.us/j/98744281549?pwd=Ti9TKzRoVStnNzIyR2pMZkc0WmR6dz09, p/w: 638211