Principle of relative locality

  title={Principle of relative locality},
  author={Giovanni Amelino-Camelia and Laurent Freidel and Jerzy Kowalski-Glikman and Lee Smolin},
  journal={Physical Review D},
We propose a deepening of the relativity principle according to which the invariant arena for nonquantum physics is a phase space rather than spacetime. Descriptions of particles propagating and interacting in spacetimes are constructed by observers, but different observers, separated from each other by translations, construct different spacetime projections from the invariant phase space. Nonetheless, all observers agree that interactions are local in the spacetime coordinates constructed by… 

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