Small-$\epsilon$ behavior of the Non-Hermitian PT-Symmetric Hamiltonian $H=p^2+x^2(ix{)}^{\epsilon }$

Abstract

The energy eigenvalues of the class of non-Hermitian PT-symmetric Hamiltonians $H=p^2+x^2(ix{)}^{\epsilon }$ ($\epsilon \ge 0$) are real, positive, and discrete. The behavior of these eigenvalues has been studied perturbatively for small $\epsilon$. However, until now no other features of $H$ have been examined perturbatively. In this paper the small-$\epsilon$ expansion of the C operator and the equivalent isospectral Dirac-Hermitian Hamiltonian $h$ are derived.

11 pages, 1 figure

References in corpus (1)

• Nonunique C operator in PT Quantum Mechanics

Cited by in corpus (2)

• PT Symmetric Schrödinger Operators: Reality of the Perturbed Eigenvalues
• Complex Lagrangian dynamics