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Pré-Publication, Document De Travail Année : 2024

Tunneling of quantum geometries in spinfoams

Résumé

Quantum gravitational tunneling effects are expected to give rise to a number of interesting observable phenomena, including, in particular, the evolution of black holes at the end of their existence or the emergence of the early universe from a quantum phase. Covariant Loop Quantum Gravity provides a framework to study these phenomena, yet a precise identification of tunneling processes is still not known. Motivated by this question, we consider a related, simpler case, that of Ponzano-Regge amplitudes: we find a surprising and detailed analogy of a class of simple transition amplitudes with tunneling processes in non-relativistic quantum mechanics.

Dates et versions

hal-04483542 , version 1 (29-02-2024)

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Pietro Dona, Hal M Haggard, Carlo Rovelli, Francesca Vidotto. Tunneling of quantum geometries in spinfoams. 2024. ⟨hal-04483542⟩
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