Gravitomagnetic Barnett Effect

TL;DR

This paper derives the gravitomagnetic Barnett effect using linearized general relativity, suggesting it could have observable macroscopic implications and impact quantum gravity theories if experimentally confirmed.

Contribution

It introduces the gravitomagnetic analogue of the Barnett effect and advocates for further theoretical and experimental research.

Findings

Derivation of the gravitomagnetic Barnett effect.

Predicted macroscopic gravitomagnetic fields.

Implications for quantum gravity theories.

Abstract

Using the linearized theory of general relativity, the gravitomagnetic analogue of the Barnett effect is derived. Further theoretical and experimental investigation is recommended, due to the expected macroscopic values of the gravitomagnetic field involved in this effect, and to the constraints which would appear on quantum theories of gravity, currently under development, in case of non detection of the predicted phenomena.