70 citations · 613 across the 30 of their papers we have counts for
4 papers · 1 filter
Cosmological evolution as squeezing: a toy model for group field cosmology
Eugene Adjei, Steffen Gielen, Wolfgang Wieland
We present a simple model of quantum cosmology based on the group field theory (GFT) approach to quantum gravity. The model is formulated on a subspace of the GFT Fock space for th…
Quantum gravity in three dimensions, Witten spinors and the quantisation of length
Wolfgang Wieland
In this paper, I investigate the quantisation of length in euclidean quantum gravity in three dimensions. The starting point is the classical hamiltonian formalism in a cylinder of…
Fock representation of gravitational boundary modes and the discreteness of the area spectrum
Wolfgang Wieland
In this article, we study the quantum theory of gravitational boundary modes on a null surface. These boundary modes are given by a spinor and a spinor-valued two-form, which enter…
New boundary variables for classical and quantum gravity on a null surface
Wolfgang Wieland
The covariant Hamiltonian formulation for general relativity is studied in terms of self-dual variables on a manifold with an internal and lightlike boundary. At this inner boundar…