Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2004-02-22
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
LaTex, 11 pages. Talk given at the ``10th Marcel Grossmann Meeting on General Relativity" QG5 session, Rio de Janeiro, July 20
Scientific paper
The idea of a role for DSR (doubly-special relativity) in quantum gravity finds some encouragement in a few scenarios, but in order to explore some key conceptual issues it is necessary to find a well-understood toy-quantum-gravity model that is fully compatible with the DSR principles. Perhaps the most significant source of encouragement comes from the recent proposal of a path for the emergence of DSR in Loop Quantum Gravity, which however relies on a few assumptions on the results of some computations that we are still unable to perform. Indications in favor of the possibility of using some elements of $\kappa$-Poincar\'e Hopf algebras (and of the related $\kappa$-Minkowski noncommutative spacetime) for the construction of a DSR theory have been discussed extensively, but a few stubborn open issues must still be resolved, especially in the two-particle sector. It has been recently observed that certain structures encountered in a formulation of 2+1-dimensional classical-gravity models would fit naturally in a DSR framework, but some key elements of these 2+1-dimensional models, including the description of observers, might be incompatible with the DSR principles.
No associations
LandOfFree
Some encouraging and some cautionary remarks on Doubly Special Relativity in Quantum Gravity does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Some encouraging and some cautionary remarks on Doubly Special Relativity in Quantum Gravity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Some encouraging and some cautionary remarks on Doubly Special Relativity in Quantum Gravity will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-349480