|
| related topics |
| {equation, function, exp} |
| {operator, operators, space} |
| {energy, state, states} |
| {group, space, representation} |
| {state, phys, rev} |
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Generating Complex Potentials with Real Eigenvalues in Supersymmetric
Quantum Mechanics
B. Bagchi, S. Mallik, C. Quesne
abstract: In the framework of SUSYQM extended to deal with non-Hermitian Hamiltonians,
we analyze three sets of complex potentials with real spectra, recently derived
by a potential algebraic approach based upon the complex Lie algebra sl(2, C).
This extends to the complex domain the well-known relationship between SUSYQM
and potential algebras for Hermitian Hamiltonians, resulting from their common
link with the factorization method and Darboux transformations. In the same
framework, we also generate for the first time a pair of elliptic partner
potentials of Weierstrass $\wp$ type, one of them being real and the other
imaginary and PT symmetric. The latter turns out to be quasiexactly solvable
with one known eigenvalue corresponding to a bound state. When the Weierstrass
function degenerates to a hyperbolic one, the imaginary potential becomes PT
non-symmetric and its known eigenvalue corresponds to an unbound state.
- oai_identifier:
- oai:arXiv.org:quant-ph/0102093
- categories:
- quant-ph hep-th math-ph math.MP
- comments:
- 20 pages, Latex 2e + amssym + graphics, 2 figures, accepted in Int.
J. Mod. Phys. A
- doi:
- 10.1142/S0217751X01004153
- arxiv_id:
- quant-ph/0102093
- journal_ref:
- Int.J.Mod.Phys. A16 (2001) 2859-2872
- report_no:
- ULB/229/CQ/00/7
- created:
- 2001-02-19
Full article ▸
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