Model pseudofermionic systems: connections with exceptional points
  We discuss the role of pseudo-fermions in the analysis of some two-dimensional models, recently introduced in connection with non self-adjoint hamiltonians. Among other aspects, we discuss the appearance of exceptional points in connection with the validity of the extended anti-commutation rules which define the pseudo-fermionic structure. 
F. Bagarello, F. Gargano
math-ph math.MP