S Graffi and F Unguendoli 1994 J. Phys. A: Math. Gen. 27 4281 doi:10.1088/0305-4470/27/12/031
S Graffi and F Unguendoli
Show affiliationsExplicit formulae are worked out for the eigenvalue multiplicity of a system of n independent quantum harmonic oscillators in the general case of 1<or=s<or=n-1 resonance relations among the frequencies omega 1... omega n. As a particular case we prove that, even though the quantum numbers are always less than the degrees of freedom, the eigenvalues are, in general, intrinsically degenerate only in the completely resonant case s=n-1.
Issue 12 (21 June 1994)
S Graffi and F Unguendoli 1994 J. Phys. A: Math. Gen. 27 4281
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