7 citations · 21 across the 12 of their papers we have counts for
3 papers · 1 filter
Overall signature of the metric and the cosmological constant
Bruno Alexandre, Steffen Gielen, João Magueijo
We consider a little known aspect of signature change, where the overall sign of the metric is allowed to change, with physical implications. We show how, in different formulations…
Unitary and Vilenkin's wave functions
Bruno Alexandre, Raymond Isichei, João Magueijo
It is remarkably difficult to reconcile unitary and Vilenkin's wave function. For example, the natural conserved inner product found in quantum unimodular gravity applies to the Ha…
Quantum Gravity Signatures in the Late-Universe
Michael W. Toomey, Savvas Koushiappas, Bruno Alexandre +1
We calculate deviations in cosmological observables as a function of parameters in a class of connection-based models of quantum gravity. In this theory non-trivial modifications t…