Deformed symmetries from quantum relational observables

TitleDeformed symmetries from quantum relational observables
Publication TypeConference Paper
Year of Publication2007
AuthorsGirelli, F, Poulin, D
Conference NameJ. of Phys.: Conf. Series, 12th Conference on Recent Developments in Gravity
KeywordsGravity, Reference frame
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 – 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.
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