70 citations · 613 across the 30 of their papers we have counts for
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gr-qc2012★ 32 cited
The spin connection of twisted geometry
Hal M. Haggard, Carlo Rovelli, Francesca Vidotto +1
Twisted geometry is a piecewise-flat geometry less rigid than Regge geometry. In Loop Gravity, it provides the classical limit for each step of the truncation utilized in the defin…
gr-qc2012★ 52 cited
The twistorial structure of loop-gravity transition amplitudes
Simone Speziale, Wolfgang M. Wieland
The spin foam formalism provides transition amplitudes for loop quantum gravity. Important aspects of the dynamics are understood, but many open questions are pressing on. In this…
gr-qc2012★ 21 cited
Horizon energy as the boost boundary term in general relativity and loop gravity
Eugenio Bianchi, Wolfgang Wieland
We show that the near-horizon energy introduced by Frodden, Ghosh and Perez arises from the action for general relativity as a horizon boundary term. Spin foam variables are used i…