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arxiv: 1207.5156 · v1 · pith:V3DZ3BLCnew · submitted 2012-07-21 · 🌀 gr-qc

Divergences and Orientation in Spinfoams

Marios Christodoulou , Miklos L{\aa}ngvik , Aldo Riello , Christian R\"oken , Carlo Rovelli This is my paper
classification 🌀 gr-qc
keywords appearingorientationsamplitudeasymptoticcharacteristiccontextcorrectionsdisappears
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We suggest that large radiative corrections appearing in the spinfoam framework might be tied to the implicit sum over orientations. Specifically, we show that in a suitably simplified context the characteristic "spike" divergence of the Ponzano-Regge model disappears when restricting the theory to just one of the two orientations appearing in the asymptotic limit of the vertex amplitude.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Causal structure in spin-foams

    gr-qc 2021-09 unverdicted novelty 5.0

    Proposes a causal EPRL spin-foam model where the two-complex orientation encodes causality and aids semiclassical geometry reconstruction.