The sextic oscillator as a γ-independent potential
G. Lévai, J. M. Arias
Abstract
The sextic oscillator is proposed as a two-parameter solvable γ-independent potential in the Bohr Hamiltonian. It is shown that closed analytical expressions can be derived for the energies and wavefunctions of the first few levels and for the strength of electric quadrupole transitions between them. Depending on the parameters this potential has a minimum at β=0 or at β>0, and might also have a local maximum before reaching its minimum. A comparison with the spectral properties of the infinite square well and the β4 potential is presented, together with a brief analysis of the experimental spectrum and E2 transitions of the 134Ba nucleus.
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