Soft triaxial rotor in the vicinity of $\gamma =\pi /6$ and its extensions

L. Fortunato, S. De Baerdemacker, K. Heyde

The collective Bohr hamiltonian is solved for the soft triaxial rotor around ${\gamma }_0=\pi /6$ with a displaced harmonic oscillator potential in $\gamma$ and a Kratzer-like potential in $\beta$. Th…