Quasi-exactly solvable cases of the N-dimensional symmetric quartic anharmonic oscillator

Details Quasi-exactly solvable cases of the N-dimensional symmetric quartic anharmonic oscillator Quasi-exactly solvable cases of the N-dimensional symmetric quartic anharmonic oscillator

2012-02-29

arxiv.org/abs/1203.0051v2

Physics

Quantum Physics

7 pages, RevTeX4. A discussion on the N=1 case has been added with the boundary condition properly treated

Scientific paper

The O(N) invariant quartic anharmonic oscillator is shown to be exactly solvable if the interaction parameter satisfies special conditions. The problem is directly related to that of a quantum double well anharmonic oscillator in an external field. A finite dimensional matrix equation for the problem is constructed explicitly, along with analytical expressions for some excited states in the system. The corresponding Niven equations for determining the polynomial solutions for the problem are given.

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