Geodesic
Geometric quantization as zero mass limit in the problem of
Zapiski Nauchnykh Seminarov POMI, Questions of quantum field theory and statistical physics. Part 9, Tome 180 (1990), pp. 3-8

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It is shown that the quantum-mechanical problem of the point particle on the sphere with the magnetic monopole in the center in the zero mass limit is equivalent to the quantum theory with geometrical action defined by means of Kirillov–Kostant 2-form for the case of $SU(2)$ group. 
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     author = {A. Yu. Alekseev and D. V. Gluschenkov},
     title = {Geometric quantization as zero mass limit in the problem of},
     journal = {Zapiski Nauchnykh Seminarov POMI},
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     publisher = {mathdoc},
     volume = {180},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1990_180_a0/}
}
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A. Yu. Alekseev; D. V. Gluschenkov. Geometric quantization as zero mass limit in the problem of. Zapiski Nauchnykh Seminarov POMI, Questions of quantum field theory and statistical physics. Part 9, Tome 180 (1990), pp. 3-8. http://geodesic.mathdoc.fr/item/ZNSL_1990_180_a0/