Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1994-02-10
J.Math.Phys.35:6784-6801,1994
Physics
High Energy Physics
High Energy Physics - Theory
21 pages, improved version
Scientific paper
10.1063/1.530643
The algebraic formulation of the quantum group covariant noncommutative geometry in the framework of the $R$-matrix approach to the theory of quantum groups is given. We consider structure groups taking values in the quantum groups and introduce the notion of the noncommutative connections and curvatures transformed as comodules under the "local" coaction of the structure group which is exterior extension of $GL_{q}(N)$. These noncommutative connections and curvatures generate $ GL_{q}(N)$-covariant quantum algebras. For such algebras we find combinations of the generators which are invariants under the coaction of the "local" quantum group and one can formally consider these invariants as the noncommutative images of the Lagrangians for the topological Chern-Simons models, non-abelian gauge theories and the Einstein gravity. We present also an explicit realization of such covariant quantum algebras via the investigation of the coset construction $GL_{q}(N+1)/(GL_{q}(N)\otimes GL(1))$.
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