Coherent states for a particle on a sphere

Details Coherent states for a particle on a sphere Coherent states for a particle on a sphere

1999-12-21

arxiv.org/abs/quant-ph/9912094v1

J.Phys.A33:6035-6048,2000

Physics

Quantum Physics

LaTeX, 16 pages, 2 figures

Scientific paper

10.1088/0305-4470/33/34/309

The coherent states for a particle on a sphere are introduced. These states are labelled by points of the classical phase space, that is the position on the sphere and the angular momentum of a particle. As with the coherent states for a particle on a circle discussed in Kowalski K {\em et al} 1996 {\em J. Phys. A} {\bf 29} 4149, we deal with a deformation of the classical phase space related with quantum fluctuations. The expectation values of the position and the angular momentum in the coherent states are regarded as the best possible approximation of the classical phase space. The correctness of the introduced coherent states is illustrated by an example of the rotator.

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