282 citations · 1.5k across the 35 of their papers we have counts for
35 papers
Spinfoam tunneling of quantum geometries in angle variables
Pietro Donà, Hal M. Haggard, Carlo Rovelli +2
Tunneling processes offer a promising path for finding signatures of quantum gravity. While tunneling of geometry has long been recognized in the literature, few detailed analyses…
Tunneling of quantum geometries in spinfoams
Pietro Dona, Hal M. Haggard, Carlo Rovelli +1
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…
Emergence of Riemannian Quantum Geometry
Hal M. Haggard, Jerzy Lewandowski, Hanno Sahlmann
In this chapter we take up the quantum Riemannian geometry of a spatial slice of spacetime. While researchers are still facing the challenge of observing quantum gravity, there is…
Combining Photometry and Astrometry to Improve Orbit Retrieval of Directly Imaged Exoplanets
Margaret Bruna, Nicolas B. Cowan, Julia Sheffler +3
Future missions like Roman, HabEx, and LUVOIR will directly image exoplanets in reflected light. While current near infrared direct imaging searches are only sensitive to young, se…
Discrete gravity dynamics from effective spin foams
Seth K. Asante, Bianca Dittrich, Hal M. Haggard
The first computation of a spin foam dynamics that provides a test of the quantum equations of motions of gravity is presented. Specifically, a triangulation that includes an inner…
Effective Spin Foam Models for Four-Dimensional Quantum Gravity
Seth K. Asante, Bianca Dittrich, Hal M. Haggard
A number of approaches to four-dimensional quantum gravity, such as loop quantum gravity and holography, situate areas as their fundamental variables. However, this choice of kinem…