Doubly special relativity in de Sitter spacetime

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Mignemi, S.
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We discuss the generalization of Doubly Special Relativity to a curved de Sitter background. The model has three observer-independent scales, the velocity of light $c$, the radius of curvature of the geometry $\alpha$, and the Planck energy $\kappa$, and can be realized in a noncommutative position space. It is possible to construct a model exhibiting a duality for the interchange of positions and momenta together with the exchange of $\alpha$ and $\kappa$.
Comment: 18 pages, plain TeX
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General Relativity and Quantum Cosmology
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