Comment on "Damping of neutrino oscillations, decoherence and the lengths of neutrino wave packets''

TL;DR

This paper critiques a recent study on neutrino oscillation coherence, highlighting inconsistencies related to causality, basis integration, and measurement ambiguity that challenge its conclusions about wave packet effects.

Contribution

The authors identify and analyze three key inconsistencies in the previous treatment of neutrino oscillation coherence, questioning its claims about wave packet observability.

Findings

Identifies causality violations in the previous model

Shows unphysical effects from non-orthogonal basis integration

Highlights ambiguity in measurement interactions

Abstract

We point out three apparent inconsistencies in the treatment of oscillation coherence from reactor neutrino and source neutrino experiments in recent paper "Damping of neutrino oscillations, decoherence and the lengths of neutrino wave packets''. First, that the dependence of the oscillation probability upon the subsequent interactions of entangled recoil particles implies causality violations and in some situations superluminal signaling; second, that integrating over a non-orthogonal basis for the entangled recoil leads to unphysical effects; and third, that the question of what interactions serve to measure the position of the initial state particle remains ambiguous. These points taken together appear to undermine the claim made therein that the effects of wave packet separation must be strictly unobservable in reactor and radioactive source based neutrino experiments.