Quantum corrections to spin effects in general relativity

TL;DR

This paper calculates quantum corrections to gravitational spin interactions and the Lense-Thirring effect for spin-1/2 particles, revealing differences from prior models involving spinless bodies.

Contribution

It introduces new quantum corrections to spin effects in gravity for particles with spin 1/2, expanding understanding beyond previous spinless models.

Findings

Quantum corrections to spin-orbit and spin-spin interactions were derived.

Corrections differ from previous calculations for spinless bodies.

Results involve second-order diagrams with massless particles in the t-channel.

Abstract

Quantum power corrections to the gravitational spin-orbit and spin-spin interactions, as well as to the Lense-Thirring effect, were found for particles of spin 1/2. These corrections arise from diagrams of second order in Newton gravitational constant G with two massless particles in the unitary cut in the t-channel. The corrections obtained differ from the previous calculation of the corrections to spin effects for rotating compound bodies with spinless constituents.