Coalescence of two exceptional points in the anti-hermitian 3-level pairing model

Abstract

The formation of a higher-order singularity by the coalescence of two exceptional points is studied in the anti-hermitian limit of the complex-extended 3-level Richardson-Gaudin model.

Comments: 5 pages, 3 figures Franco-Japanese Symposium on New Paradigms in Nuclear Physics, September 29th to October 2nd, 2008, Paris