186 citations · 1.2k across the 27 of their papers we have counts for
4 papers · 1 filter
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…
Gravitational waves affect vacuum entanglement
Qidong Xu, Shadi Ali Ahmad, Alexander R. H. Smith
The entanglement harvesting protocol is an operational way to probe vacuum entanglement. This protocol relies on two atoms, modelled by Unruh-DeWitt detectors, that are initially u…
Quantum time dilation in atomic spectra
Piotr T. Grochowski, Alexander R. H. Smith, Andrzej Dragan +1
Quantum time dilation occurs when a clock moves in a superposition of relativistic momentum wave packets. We utilize the lifetime of an excited hydrogen-like atom as a clock to dem…
Quantum time dilation: A new test of relativistic quantum theory
Alexander R. H. Smith
A novel quantum time dilation effect is shown to arise when a clock moves in a quantum superposition of two relativistic velocities. This effect is argued to be measurable using ex…