The isotropic harmonic oscillator in dimension 3 separates in several different coordinate systems. Separating in a particular coordinate system defines a system of three Poisson commuting integrals and, correspondingly, three commuting operators, one of which is the Hamiltonian. We show that the Lagrangian fibration defined by the Hamiltonian, the z component of the angular momentum, and a quartic integral obtained from separation in prolate spheroidal coordinates has a non-degenerate focus-focus point, and hence, non-trivial Hamiltonian monodromy for sufficiently large energies. The joint spectrum defined by the corresponding commuting quantum operators has non-trivial quantum monodromy implying that one cannot globally assign quantum numbers to the joint spectrum.
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March 2019
Research Article|
March 25 2019
A Lagrangian fibration of the isotropic 3-dimensional harmonic oscillator with monodromy Available to Purchase
Irina Chiscop;
Irina Chiscop
1
Bernoulli Institute for Mathematics, Computer Science and Artificial Intelligence, University of Groningen
, Groningen, The Netherlands
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Holger R. Dullin
;
Holger R. Dullin
2
School of Mathematics and Statistics, University of Sydney
, Sydney, Australia
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Konstantinos Efstathiou
;
Konstantinos Efstathiou
1
Bernoulli Institute for Mathematics, Computer Science and Artificial Intelligence, University of Groningen
, Groningen, The Netherlands
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Holger Waalkens
Holger Waalkens
1
Bernoulli Institute for Mathematics, Computer Science and Artificial Intelligence, University of Groningen
, Groningen, The Netherlands
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Irina Chiscop
1
Holger R. Dullin
2
Konstantinos Efstathiou
1
Holger Waalkens
1
1
Bernoulli Institute for Mathematics, Computer Science and Artificial Intelligence, University of Groningen
, Groningen, The Netherlands
2
School of Mathematics and Statistics, University of Sydney
, Sydney, Australia
J. Math. Phys. 60, 032103 (2019)
Article history
Received:
August 27 2018
Accepted:
March 06 2019
Citation
Irina Chiscop, Holger R. Dullin, Konstantinos Efstathiou, Holger Waalkens; A Lagrangian fibration of the isotropic 3-dimensional harmonic oscillator with monodromy. J. Math. Phys. 1 March 2019; 60 (3): 032103. https://doi.org/10.1063/1.5053887
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