The evolution pattern of exceptional points is studied in a non-integrable limit of the complex-extended 3-level Richardson-Gaudin model. The appearance of a pseudo-diabolic point from the fusion of two exceptional points is demonstrated in the anti-hermitian limit of the model and studied in some details.
@article{arxiv.0811.4250,
title = {Degeneracies in a nonintegrable pairing model},
author = {J. Okolowicz and M. Ploszajczak and J. Dukelsky},
journal= {arXiv preprint arXiv:0811.4250},
year = {2008}
}
Comments
11 pages, 5 figures 27th International Workshop on Nuclear Theory, Rila Mountain, Bulgaria