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arXiv · 2402.09038

Tunneling of quantum geometries in spinfoams

Pietro Dona·Hal M. Haggard·Carlo Rovelli·Francesca Vidotto
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Abstract

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.

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Pietro Dona, Hal M. Haggard, Carlo Rovelli, Francesca Vidotto. 2024-02-14. Tunneling of quantum geometries in spinfoams. https://doi.org/10.1103/physrevd.109.106016

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