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Durham University

Department of Mathematical Sciences

Seminars

This week's seminars

Maths HEP Lunchtime Seminars: The quantum Skyrmion-Skyrmion problem

Presented by Chris Halcrow, University of Leeds

17 January 2020 13:00 in CM101

The Skyrme model was first considered in 1962. In it, atomic nuclei are modelled as topological solitons - the baryon (or atomic) number being identified with the topological charge of the theory. The model gained popularity when Witten showed that it had much in common with large N QCD. Despite decades of interest, the Skyrmion-Skyrmion problem (which models nucleon-nucleon interactions and scattering) is still poorly understood. In this talk, I will discuss recent work (with Derek Harland) where we explain that the spin-orbit force (an important component of the nucleon-nucleon interaction) arises naturally due to the geometry of the 2-Skyrmion configuration space. Moving on to nucleon scattering, I will discuss the minimal requirements needed to attempt this problem. These simple requirements have surprising consequences, accompanied by a list of new problems and questions.

Contact mathew.r.bullimore@durham.ac.uk for more information