Numerical indications on the semiclassical limit of the flipped vertex

2007/10/27 by Elena Magliaro, Claudio Perini, Carlo Rovelli · 1 citation
Medicine · Physics and Astronomy · #Black Holes and Theoretical Physics #Neuroblastoma Research and Treatments #Noncommutative and Quantum Gravity Theories #gr-qc

paper · pdf · doi:10.1088/0264-9381/25/9/095009

published as Class.Quant.Grav.25:095009,2008 · 4 pages, 8 figures

arxiv created 2007/10/27 · openalex publication_date 2008/04/15 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30

Abstract

We introduce a technique for testing the semiclassical limit of a quantum gravity vertex amplitude. The technique is based on the propagation of a semiclassical wave packet. We apply this technique to the newly introduced 'flipped' vertex in loop quantum gravity, in order to test the intertwiner dependence of the vertex. Under some drastic simplifications, we find very preliminary, but surprisingly good numerical evidence for the correct classical limit.

Citations

• LQG vertex with finite Immirzi parameter
• New spinfoam vertex for quantum gravity

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