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Article Dans Une Revue Physical Review D Année : 2014

Radiative corrections to the EPRL-FK spinfoam graviton

Résumé

I study the corrections engendered by the insertion of a "melon" graph in the bulk of the first-order spinfoam used for the graviton propagator. I find that these corrections are highly non-trivial and, in particular, that they concern those terms which disappear in the Bojowald-Bianchi-Magliaro-Perini limit of vanishing Barbero-Immirzi parameter at fixed area. This fact is the first realization of the often cited idea that the spinfoam amplitude receives higher order corrections under the refinement of the underlying two-complex.
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Dates et versions

hal-00871558 , version 1 (20-09-2023)

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Aldo Riello. Radiative corrections to the EPRL-FK spinfoam graviton. Physical Review D, 2014, 89 (6), pp.064021. ⟨10.1103/PhysRevD.89.064021⟩. ⟨hal-00871558⟩
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