Abstract
The bicrossproduct model λ-Minkowski (or `κ-Minkowski') quantum spacetime has an anomaly for the action of the Poincaré quantum group which was resolved by an extra cotangent direction θ' not visible classically. We show that gauging a coefficient of θ' introduces gravity into the model. We solve and analyse the model nonrelativisticaly in a 1/r potential, finding an induced constant term in the effective potential energy and a weakening and separation of the effective gravitational and inertial masses as the test particle Klein-Gordon mass increases. The present work is intended as a proof of concept but the approach could be relevant to an understanding of dark energy and possibly to macroscopic quantum systems.
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