Projective module description of embedded noncommutative spaces
Abstract
An algebraic formulation is given for the embedded noncommutative spaces over the Moyal algebra developed in a geometric framework in CTZZ. We explicitly construct the projective modules corresponding to the tangent bundles of the embedded noncommutative spaces, and recover from this algebraic formulation the metric, Levi-Civita connection and related curvatures, which were introduced geometrically in CTZZ. Transformation rules for connections and curvatures under general coordinate changes are given. A bar involution on the Moyal algebra is discovered, and its consequences on the noncommutative differential geometry are described.
0