Tunneling of quantum geometries in spinfoams
arXiv:2402.09038 · doi:10.1103/PhysRevD.109.106016
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.
6 pages, 5 figures. v2 matches the published version
References in corpus (9)
- Quantum Nature of the Big Bang: Improved dynamics
- Quantum Nature of the Big Bang
- Quantum Oppenheimer-Snyder and Swiss Cheese models
- Towards Spinfoam Cosmology
- The Ponzano-Regge model
- On the geometry of the black-to-white hole transition within a single asymptotic region
- Spherical symmetric gravitational collapse of a dust cloud: polymerized dynamics in reduced phase space
- Diffuse emission from black hole remnants
- Tunneling wavefunction proposal with loop quantum geometry effects