PTsymmetric, quasiexactly solvable matrix Hamiltonians
Abstract
Matrix quasiexactly solvable operators are considered and new conditions are determined to test whether a matrix differential operator possesses one or several finitedimensional invariant vector spaces. New examples of (2 × 2)matrix quasiexactly solvable operators are constructed with the emphasis set on PTsymmetric Hamiltonians.
 Publication:

Journal of Physics A Mathematical General
 Pub Date:
 October 2007
 DOI:
 10.1088/17518113/40/43/014
 arXiv:
 arXiv:quantph/0701177
 Bibcode:
 2007JPhA...4013063B
 Keywords:

 Quantum Physics;
 High Energy Physics  Theory
 EPrint:
 14 pages, 1 figure, one equation corrected, results added