Schwinger term of neutron Hamiltonian measurable by polarization change in a spin-echo spectrometer

TL;DR

This paper discusses the measurement of the Schwinger term in the neutron Hamiltonian, caused by electric fields on moving neutrons, using advanced spin-echo interferometry techniques.

Contribution

It introduces a method to measure the tiny Schwinger term effect in neutron Hamiltonian via polarization changes in a spin-echo spectrometer.

Findings

Potential to detect extremely small electric field effects on neutrons

Use of spin-echo spectrometry for quantum Hamiltonian measurements

Advancement in neutron polarization measurement techniques

Abstract

The Schwinger term of the neutron Hamiltonian is due to the effect of an electric field on the moving neutron. Although this effect is extremely small, it can be measured by the novel spin-echo interferometers.