3.6k citations
- University of WaterlooCA117 papers
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- University of VictoriaCA26 papers
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- Centre National de la Recherche ScientifiqueFR19 papers
- Imperial College LondonGB19 papers
- University of CambridgeGB19 papers
- University of California, Santa BarbaraUS18 papers
- California Institute of TechnologyUS17 papers
- École Normale Supérieure de LyonFR16 papers
- Massachusetts Institute of TechnologyUS14 papers
- Laboratoire de Physique de l'ENS de LyonFR13 papers
25 papers · 2 filters
Deformed Special Relativity in Position Space
S. Hossenfelder
We investigate how deformations of special relativity in momentum space can be extended to position space in a consistent way, such that the dimensionless contraction between wave-…
Quantum causal histories in the light of quantum information
Etera R. Livine, Daniel R. Terno
We use techniques of quantum information theory to analyze the quantum causal histories approach to quantum gravity. We show that while it is consistent to introduce closed timelik…
Grasping rules and semiclassical limit of the geometry in the Ponzano-Regge model
Jonathan Hackett, Simone Speziale
We show how the expectation values of geometrical quantities in 3d quantum gravity can be explicitly computed using grasping rules. We compute the volume of a labelled tetrahedron…
Accelerating Taub-NUT and Eguchi-Hanson solitons in four dimensions
Brenda Chng, Robert Mann, Cristian Stelea
We construct new solutions of the vacuum Einstein field equations in four dimensions via a solution generating method utilizing the SL(2,R) symmetry of the reduced Lagrangian. We a…
Towards Quantum Gravity: A Framework for Probabilistic Theories with Non-Fixed Causal Structure
Lucien Hardy
General relativity is a deterministic theory with non-fixed causal structure. Quantum theory is a probabilistic theory with fixed causal structure. In this paper we build a framewo…
Group Integral Techniques for the Spinfoam Graviton Propagator
Etera R. Livine, Simone Speziale
We consider the proposal of gr-qc/0508124 for the extraction of the graviton propagator from the spinfoam formalism. We propose a new ansatz for the boundary state, using which we…