60 citations · 174 across the 5 of their papers we have counts for
8 papers
Edge modes as reference frames and boundary actions from post-selection
Sylvain Carrozza, Philipp A. Hoehn
We introduce a general framework realizing edge modes in (classical) gauge field theory as dynamical reference frames, an often suggested interpretation that we make entirely expli…
Internal quantum reference frames for finite Abelian groups
Philipp A. Hoehn, Marius Krumm, Markus P. Mueller
Employing internal quantum systems as reference frames is a crucial concept in quantum gravity, gauge theories and quantum foundations whenever external relata are unavailable. In…
Quantum Relativity of Subsystems
Shadi Ali Ahmad, Thomas D. Galley, Philipp A. Hoehn +2
One of the most basic notions in physics is the partitioning of a system into subsystems, and the study of correlations among its parts. In this work, we explore these notions in t…
Equivalence of approaches to relational quantum dynamics in relativistic settings
Philipp A. Hoehn, Alexander R. H. Smith, Maximilian P. E. Lock
We have previously shown (arXiv:1912.00033) that three approaches to relational quantum dynamics -- relational Dirac observables, the Page-Wootters formalism and quantum deparametr…
The Trinity of Relational Quantum Dynamics
Philipp A. Hoehn, Alexander R. H. Smith, Maximilian P. E. Lock
The problem of time in quantum gravity calls for a relational solution. Using quantum reduction maps, we establish a previously unknown equivalence between three approaches to rela…
Switching quantum reference frames in the N-body problem and the absence of global relational perspectives
Augustin Vanrietvelde, Philipp A. Hoehn, Flaminia Giacomini
Given the importance of quantum reference frames (QRFs) to both quantum and gravitational physics, it is pertinent to develop a systematic method for switching between the descript…