Abstract
We describe the quantum sphere of Podles for c = 0 by means of a stereographic projection which is analogous to that which exibits the classical sphere as a complex manifold. We show that the algebra of functions and the differential calculus on the sphere are covariant under the coaction of fractional transformations with SU q(2) coefficients as well as under the action of SU q(2) vector fields. Going to the classical limit we obtain the Poisson sphere. Finally, we study the invariant integration of functions on the sphere and find its relation with the translationally invariant integration on the complex quantum plane.
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This work was supported in part by the Director, Office of Energy Research, Office of High Energy and Nuclear Physics, Division of High Energy Physics of the U.S. Department of Energy under Contract DE-AC03-76SF00098 and in part by the National Science Foundation under grant PHY-90-21139
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Chu, CS., Ho, PM. & Zumino, B. The quantum 2-sphere as a complex quantum manifold. Z Phys C - Particles and Fields 70, 339–344 (1996). https://doi.org/10.1007/s002880050111
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DOI: https://doi.org/10.1007/s002880050111