On the quantum dynamics of a point particle in conical space

Details On the quantum dynamics of a point particle in conical space On the quantum dynamics of a point particle in conical space

2008-09-09

arxiv.org/abs/0809.1537v1

Physics

Quantum Physics

To appear in Annals of Physics

Scientific paper

10.1016/j.aop.2008.08.002

A quantum neutral particle, constrained to move on a conical surface, is used as a toy model to explore bound states due to both a inverse squared distance potential and a $\delta$-function potential, which appear naturally in the model. These pathological potentials are treated with the self-adjoint extension method which yields the correct boundary condition (not necessarily a null wavefunction) at the origin. We show that the usual boundary condition requiring that the wavefunction vanishes at the origin is arbitrary and drastically reduces the number of bound states if used. The situation studied here is closely related to the problem of a dipole moving in conical space.

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