Physics – Mathematical Physics
Scientific paper
2004-06-11
An extended and improved version has been published in Theor. Math. Phys. 148 (2006) 1086
Physics
Mathematical Physics
14 pages
Scientific paper
We prove that any $n$-dimensional Hamiltonian operator with pure point spectrum is completely integrable via self-adjoint first integrals. Furthermore, we establish that given any closed set $\Sigma\subset\mathbb R$ there exists an integrable $n$-dimensional Hamiltonian which realizes it as its spectrum. We develop several applications of these results and discuss their implications in the general framework of quantum integrability.
Enciso Alberto
Peralta-Salas Daniel
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