## Doubly special relativity in de Sitter spacetime

Mignemi, S.
##### Description
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
##### Keywords
General Relativity and Quantum Cosmology