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Propagator on the<i>h</i>-deformed Lobachevsky plane
The action of the isometry algebra Uh (sl (2)) on the h -deformed Lobachevsky plane is found. The invariant distance and the invariant two-point functions are shown to agree precisely with the classical ones. The propagator of the Laplacian is calculated explicitly. It is invariant only after adding a `non-classical' …