@conference {GP07a,
title = {Deformed symmetries from quantum relational observables},
booktitle = {J. of Phys.: Conf. Series, 12th Conference on Recent Developments in Gravity},
volume = {68},
number = {012025},
year = {2007},
abstract = {Deformed Special Relativity (DSR) is a candidate phenomenological theory to describe the Quantum Gravitational (QG) semi-classical regime. A possible interpretation of DSR can be derived from the notion of deformed reference frame. Observables in (quantum) General Relativity can be constructed from (quantum) reference frame {\textendash} a physical observable is then a relation between a system of interest and the reference frame. We present a toy model and study an example of such quantum relational observables. We show how the intrinsic quantum nature of the reference frame naturally leads to a deformation of the symmetries, comforting DSR to be a good candidate to describe the QG semi-classical regime.},
keywords = {Gravity, Reference frame},
author = {F. Girelli and Poulin, D.}
}