1301.2900 (Willi-Hans Steeb et al.)

Exceptional Points, Nonnormal Matrices, Hierarchy of Spin Matrices and
an Eigenvalue Problem    [PDF]

Willi-Hans Steeb, Yorick Hardy

Exceptional points are studied for non-hermitian Hamilton operators given by a hierarchy of spin operators.

View original: http://arxiv.org/abs/1301.2900