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Physics Colloquium: Amy Nicholson

March 21 | 4:00 pm - 5:00 pm

Title: The ties that bind: understanding nuclear forces from lattice QCD

Abstract: 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.

Host: Vladimir Skokov

Details

Date:
March 21
Time:
4:00 pm - 5:00 pm
Event Category: