137 citations · 452 across the 15 of their papers we have counts for
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gr-qc2004
The Feynman propagator for spin foam quantum gravity
Daniele Oriti
We link the notion causality with the orientation of the 2-complex on which spin foam models are based. We show that all current spin foam models are orientation-independent, point…
gr-qc2004
Spinfoam 2d quantum gravity and discrete bundles
Daniele Oriti, Carlo Rovelli, Simone Speziale
In 4 dimensions, general relativity can be formulated as a constrained theory; we show that the same is true in 2 dimensions. We describe a spinfoam quantization of this const…
gr-qc2004
About Lorentz invariance in a discrete quantum setting
Etera R. Livine, Daniele Oriti
A common misconception is that Lorentz invariance is inconsistent with a discrete spacetime structure and a minimal length: under Lorentz contraction, a Planck length ruler would b…