958 citations · 6.3k across the 174 of their papers we have counts for
8 papers · 2 filters
Discrete quantum gravity: applications to cosmology
Rodolfo Gambini, Jorge Pullin
We consider the application of the consistent lattice quantum gravity approach we introduced recently to the situation of a Friedmann cosmology and also to Bianchi cosmological mod…
Well posed constraint-preserving boundary conditions for the linearized Einstein equations
Gioel Calabrese, Jorge Pullin, Oscar Reula +2
In the Cauchy problem of general relativity one considers initial data that satisfies certain constraints. The evolution equations guarantee that the evolved variables will satisfy…
Canonical quantization of general relativity: the last 18 years in a nutshell
Jorge Pullin
This is a summary of the lectures presented at the Xth Brazilian school on cosmology and gravitation. The style of the text is that of a lightly written descriptive summary of idea…
Convergence and stability in numerical relativity
Gioel Calabrese, Jorge Pullin, Olivier Sarbach +1
It is often the case in numerical relativity that schemes that are known to be convergent for well posed systems are used in evolutions of weakly hyperbolic (WH) formulations of Ei…
Canonical quantization of general relativity in discrete space-times
Rodolfo Gambini, Jorge Pullin
It has long been recognized that lattice gauge theory formulations, when applied to general relativity, conflict with the invariance of the theory under diffeomorphisms. Additional…
Canonical quantization of constrained theories on discrete space-time lattices
Cayetano Di Bartolo, Rodolfo Gambini, Jorge Pullin
We discuss the canonical quantization of systems formulated on discrete space-times. We start by analyzing the quantization of simple mechanical systems with discrete time. The qua…