2 papers
hep-th2025
A time operator and the time-of-arrival problem in quantum field theory
Daniele Colosi, Robert Oeckl
The Newton-Wigner states and operator are widely accepted to provide an adequate notion of spatial localization of a particle in quantum field theory on a spacelike hypersurface. R…
hep-th2024
Interaction of evanescent particles with an Unruh-DeWitt detector
Daniele Colosi, Robert Oeckl, Adamantia Zampeli
We demonstrate that the recently introduced evanescent particles of a massive scalar field can be emitted and absorbed by an Unruh-DeWitt detector. In doing so the particles carry…