arXiv:1905.09004·v2·High Energy Physics — Phenomenology
Wave Packets Losing Their Covariance
Emilio Ciuffoli🇨🇳 · Jarah Evslin🇨🇳 · Hosam Mohammed🇨🇳
Abstract
In neutrino physics, it is sometimes assumed that all wave packets must transform covariantly as Lorentz vectors. We show in a simple example that even if the initial conditions of a wave packet are covariant, then evolution in a relativistic interacting theory followed by a measurement of entangled particles can lead to a wave packet which is no longer covariant.
Comments: 12 pages, 3 PDF figures, v2 expanded discussion of Daya Bay