Quantum Distinction of Inertial Frames: Local vs. Global
arXiv:2003.09719 · doi:10.1103/PhysRevD.101.104060
Abstract
We study the response function of Unruh-deWitt detectors placed in a flat spacetime inside a thin matter shell. We show that the response function distinguishes between the local and global (Minkowski) inertial frames and picks up the presence of the shell even when the detector is switched on for a finite time interval within which a light signal cannot travel to the shell and back as required by a classical measurement. We also analyze how the response of the detector depends on its location within the shell.
arXiv comment6 pages, 4 figures
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- Vacua in locally de Sitter cosmologies, and how to distinguish them
- Expansion-sensitive coupling of a local quantum system in de Sitter cosmology