Neutron interference and quantum measurement problems

J.-Q. Liang, X. X. Ding

M. Namiko, Yoshié Otake, H. Soshi

Physical and epistemological implications of recent experiments on the neutron interference are discussed from the viewpoint of the Machida-Namiki theory of measurement in quantum mechanics, without resort to discussion on the number-phase uncertainty relation. The same idea is also applied to the neutrino oscillation problem.

Helmut Rauch

美喜雄 並木, S. Pascazio

We analyze recent absorber neutron-interference experiments from the measurement-theoretical point of view, and show that the fluctuation effect inside absorbers can reduce observed values of the visibility to those lower than as expected by elementary quantum mechanics. We also briefly discuss implications of interference experiments by means of short neutron pulses, and future problems on possible experiments by means of cold neutron beams.

H. Rauch

М. А. Захаров, Aleksandr I Frank, G. V. Kulin +1 more

Abstract The problem of the interaction of ultracold neutrons with a neutron interference filter oscillating in space is investigated. In the problem, the evolution of the wave packet is considered by means of numerically solving the non-stationary Schrödinger equation by splitting the evolution operator. The filter oscillating in space acts as a quantum modulator of the ultracold neutron flux. The resulting spectra of the transmitted and reflected states are obtained depending on the motion parameters of the interferometer.