186 citations · 1.1k across the 23 of their papers we have counts for
6 papers · 1 filter
An operational approach to spacetime symmetries: Lorentz transformations from quantum communication
Philipp A. Hoehn, Markus P. Mueller
In most approaches to fundamental physics, spacetime symmetries are postulated a priori and then explicitly implemented in the theory. This includes Lorentz covariance in quantum f…
Toolbox for reconstructing quantum theory from rules on information acquisition
Philipp A Hoehn
We develop an operational approach for reconstructing the quantum theory of qubit systems from elementary rules on information acquisition. The focus lies on an observer O interrog…
Canonical linearized Regge Calculus: counting lattice gravitons with Pachner moves
Philipp A. Hoehn
We afford a systematic and comprehensive account of the canonical dynamics of 4D Regge Calculus perturbatively expanded to linear order around a flat background. To this end, we co…
Classification of constraints and degrees of freedom for quadratic discrete actions
Philipp A. Hoehn
We provide a comprehensive classification of constraints and degrees of freedom for variational discrete systems governed by quadratic actions. This classification is based on the…
Quantization of systems with temporally varying discretization II: Local evolution moves
Philipp A Hoehn
Several quantum gravity approaches and field theory on an evolving lattice involve a discretization changing dynamics generated by evolution moves. Local evolution moves in variati…
Quantization of systems with temporally varying discretization I: Evolving Hilbert spaces
Philipp A. Hoehn
A temporally varying discretization often features in discrete gravitational systems and appears in lattice field theory models subject to a coarse graining or refining dynamics. T…