Spin, Acceleration and Gravity

TL;DR

This paper investigates the behavior of massless and Proca fields in accelerating spacetimes, critically analyzing the potential for a spin-acceleration coupling and concluding it likely does not exist.

Contribution

It extends the study of field perturbations to accelerating spacetimes and critically examines the possibility of a spin-acceleration coupling, finding no evidence for such a direct interaction.

Findings

No direct spin-acceleration coupling found

Extended analysis to Proca fields in Rindler spacetime

Clarified differences between spin-rotation and spin-acceleration effects

Abstract

The massless field perturbations of the accelerating Minkowski and Schwarzschild spacetimes are studied. The results are extended to the propagation of the Proca field in Rindler spacetime. We examine critically the possibility of existence of a general spin-acceleration coupling in complete analogy with the well-known spin-rotation coupling. We argue that such a direct coupling between spin and linear acceleration does not exist.