General relativity is usually formulated as a theory with gauge invariance under the
diffeomorphism group, but there is a'dilaton'formulation where it is in addition invariant under …

We study the role of the Barbero-Immirzi parameter γ and the choice of connection in the
construction of (a symmetry-reduced version of) loop quantum gravity. We start with the four …

In this series of papers, we investigate the projective framework initiated by Jerzy Kijowski
(1977) and Andrzej Okołów (2009, 2013, 2014), which describes the states of a quantum …

We show that there are two equivalent first order descriptions of 2+ 1 gravity with a nonzero
cosmological constant. One is the well-known spacetime description, and the other is in …

A bstract We discuss the canonical structure of a spacetime version of the radial gauge, ie
Gaußian normal spacetime coordinates. While it was found for the spatial version of the …

We argue that a conformally invariant extension of general relativity coupled to the standard
model is the fundamental theory that needs to be quantized. We show that it can be treated …

The Immirzi parameter of loop quantum gravity is a one-parameter ambiguity of the theory
whose precise interpretation is not universally agreed upon. It is an inherent characteristic of …

Shape dynamics is a reformulation of general relativity, locally equivalent to Einstein's
theory, in which the refoliation invariance of the older theory is traded for local scale …

The main theme of this thesis is an investigation into possible connections between loop
quantum gravity and quantum field theory on curved spacetimes: On the one hand, we aim …

The Barbero-Immirzi parameter of loop quantum gravity is a one parameter ambiguity of the
theory whose physical significance is as-of-yet unknown. It is an inherent characteristic of …