29 citations · 86 across the 21 of their papers we have counts for
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Gravitation and cosmology with York time
Philipp Roser
[Shortened abstract:] In this thesis we investigate a solution to the `problem of time' in canonical quantum gravity by splitting spacetime into surfaces of constant mean curvature…
Cosmological history in York time: inflation and perturbations
Philipp Roser, Antony Valentini
The constant mean extrinsic curvature on a spacelike slice may constitute a physically preferred time coordinate, `York time'. One line of enquiry to probe this idea is to understa…
Cosmological perturbation theory with York time
Philipp Roser
One method to overcome the notorious problem of time in the quantisation of gravity is the identification of a physically preferred time parameter, a promising candidate being so-c…
Quantum mechanics on York slices
Philipp Roser
For some time the York time parameter has been identified as a candidate for a physically meaningful time in cosmology. An associated Hamiltonian may be found by solving the Hamilt…
An extension of cosmological dynamics with York time
Philipp Roser
It has been suggested that the York parameter (effectively the scalar extrinsic curvature of a spatial hypersurface) may play the role of a fundamental time parameter. In a fla…
Classical and quantum cosmology with York time
Philipp Roser, Antony Valentini
We consider a solution to the problem of time in quantum gravity by deparameterisation of the ADM action in terms of York time, a parameter proportional to the extrinsic curvature…