Quantum mechanics of a generalised rigid body

Understand

We consider the quantum version of Arnold's generalisation of a rigid body in classical mechanics.

• Thus, we quantise the motion on an arbitrary Lie group manifold of a particle whose classical trajectories correspond to the geodesics of any one-sided-invariant metric.
• We show how the derivation of the spectrum of energy eigenstates can be simplified by making use of automorphisms of the Lie algebra and (for groups of Type I) by methods of harmonic analysis.
• We show how the method can be extended to cosets, generalising the linear rigid rotor.