Theoretical analysis of a reported weak gravitational shielding effect

TL;DR

This paper analyzes a reported weak gravitational shielding effect observed in high-temperature superconductors under special conditions, concluding that standard gravity theories cannot explain it, possibly requiring non-perturbative quantum gravity approaches.

Contribution

It provides a theoretical analysis indicating that the observed effect cannot be explained by standard gravity theories, suggesting the need for non-perturbative quantum gravity explanations.

Findings

Standard gravity theories do not explain the effect.

The phenomenon may require non-perturbative Euclidean quantum gravity.

The effect is observed under specific conditions involving superconductivity.

Abstract

Under special conditions (Meissner-effect levitation in a high frequency magnetic field and rapid rotation) a disk of high-$T_c$ superconducting material has recently been found to produce a weak shielding of the gravitational field. We show that this phenomenon has no explanation in the standard gravity theories, except possibly in the non-perturbative Euclidean quantum theory.