How Do Energies Complexify?
DOI:
https://doi.org/10.14311/936Keywords:
PT-symmetry, exceptional points, Dirac equationAbstract
Some particular properties of the parametric dependence of eigenvalues with emphasis on their complexification are discussed. The non-diagonalisability of PT-symmetric matrix Hamiltonians in exceptional points is compared with level-crossing prohibition of Hermitian systems. For non-matrix Hamiltonians, the different way of complexification between Klein-Gordon and Dirac Hamiltonians is demonstrated.Downloads
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