Doubly-Special Relativity

@article{AmelinoCamelia2002DoublySpecialR,
  title={Doubly-Special Relativity},
  author={Giovanni Amelino-Camelia},
  journal={International Journal of Modern Physics D},
  year={2002}
}
I give a short non-technical review of the results obtained in recent work on "Doubly Special Relativity", the relativistic theories in which the rotation/boost transformations between inertial observers are characterized by two observer-independent scales (the familiar velocity scale, $c$, and a new observer-independent length/momentum scale, naturally identified with the Planck length/momentum). I emphasize the aspects relevant for the search of a solution to the cosmic-ray paradox. 
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