Wave Packets Losing Their Covariance

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.

12 pages, 3 PDF figures, v2 expanded discussion of Daya Bay

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• Measurement of electron antineutrino oscillation with 1958 days of operation at Daya Bay
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Cited by in corpus (1)

• Wave packet treatment of neutrino flavor oscillations in various spacetimes