62 citations · 198 across the 9 of their papers we have counts for
7 papers · 1 filter
Big Bang Singularity Resolution In Quantum Cosmology
Karim P. Y. Thebault
We evaluate the physical viability and logical strength of an array of putative criteria for big bang singularity resolution in quantum cosmology. Based on this analysis, we propos…
What Can We Learn From Analogue Experiments?
Karim P. Y. Thebault
In 1981 Unruh proposed that fluid mechanical experiments could be used to probe key aspects of the quantum phenomenology of black holes. In particular, he claimed that an analogue…
Regarding the `Hole Argument' and the `Problem of Time'
Sean Gryb, Karim P. Y. Thebault
The canonical formalism of general relativity affords a particularly interesting characterisation of the infamous hole argument. It also provides a natural formalism in which to re…
Schrodinger Evolution for the Universe: Reparametrization
Sean Gryb, Karim Thebault
Starting from a generalized Hamilton-Jacobi formalism, we develop a new framework for constructing observables and their evolution in theories invariant under global time reparamet…
Time Remains
Sean Gryb, Karim Thebault
On one popular view, the general covariance of gravity implies that change is relational in a strong sense, such that all it is for a physical degree of freedom to change is for it…
The role of time in relational quantum theories
Sean Gryb, Karim Thebault
We propose a solution to the problem of time for systems with a single global Hamiltonian constraint. Our solution stems from the observation that, for these theories, conventional…
Quantisation, Representation and Reduction; How Should We Interpret the Quantum Hamiltonian Constraints of Canonical Gravity?
Karim P. Y. Thebault
Hamiltonian constraints feature in the canonical formulation of general relativity. Unlike typical constraints they cannot be associated with a reduction procedure leading to a non…