Theoretical Physics Colloquium by Prof. Roxanne P. Springer.
This presentation was held live on August 24, 2022 as part of the theoretical physics colloquium series hosted by Prof. Igor Shovkovy at the Arizona State University. The series features high-quality interactive presentations on current advances in theoretical physics by active researchers in the field of theoretical physics.
Abstract for this presentation:
This talk is based upon a review article that I am writing for the Annual Review of Nuclear and Particle Science with Thomas Richardson (Mainz) and Matthias Schindler (U South Carolina). The idea is that somebody can walk in with a Lagrangian or potential or set of nucleon-nucleon interactions (in the standard model or beyond), apply a set of tests and techniques, and walk out knowing which terms are dominant in the large-Nc limit and why. This result can then be used to prioritize potential experiments, lattice calculations, or many-body calculations. Typically the large-Nc ordering is not the only power counting in the room, so an expansion in 1/Nc can be used to identify expected trends on top of an existing proposed hierarchy of interactions. This is particularly useful in a situation where there is little experimental or lattice information available.