A quantum exactly solvable non-linear oscillator with quasi-harmonic behaviour
Keywords: 03.65.-w; 03.65.G; 02.30.Gp; 02.30.Ik81Q05; 81R12; 81U15; 34B24Non-linear oscillators; Quantization; Position-dependent mass; Schrödinger equation; Hermite polynomials; Intertwined Hamiltonians; Shape-invariant potentials