Abstract
It is necessary to calculate the operator for the non-Hermitian -symmetric Hamiltonian in order to demonstrate that defines a consistent unitary theory of quantum mechanics. However, the operator cannot be obtained by using perturbative methods. Including a small imaginary cubic term gives the Hamiltonian , whose operator can be obtained perturbatively. In the semiclassical limit all terms in the perturbation series can be calculated in closed form and the perturbation series can be summed exactly. The result is a closed-form expression for having a nontrivial dependence on the dynamical variables and and on the parameter .
- Received 6 September 2005
DOI:https://doi.org/10.1103/PhysRevD.73.025002
©2006 American Physical Society