690 citations · 5.8k across the 154 of their papers we have counts for
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Some comments on the universal constant in DSR
Florian Girelli, Etera R. Livine
Deformed Special Relativity is usually presented as a deformation of Special Relativity accommodating a new universal constant, the Planck mass, while respecting the relativity pri…
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…
Towards a Covariant Loop Quantum Gravity
Etera R. Livine
We review the canonical analysis of the Palatini action without going to the time gauge as in the standard derivation of Loop Quantum Gravity. This allows to keep track of the Lore…
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…
Exact and Approximate Unitary 2-Designs: Constructions and Applications
Christoph Dankert, Richard Cleve, Joseph Emerson +1
We develop the concept of a unitary t-design as a means of expressing operationally useful subsets of the stochastic properties of the uniform (Haar) measure on the unitary group U…
Towards the graviton from spinfoams: higher order corrections in the 3d toy model
Etera R. Livine, Simone Speziale, Joshua L. Willis
We consider the recent calculation gr-qc/0508124 of the graviton propagator in the spinfoam formalism. Within the 3d toy model introduced in gr-qc/0512102, we test how the spinfoam…