Scalar self-force on static charge in a long throat

TL;DR

This paper calculates the scalar self-force on a static charge in a long throat spacetime, considering various scalar field masses and couplings, and confirms results in the large mass limit.

Contribution

It provides a comprehensive computation of the scalar self-force for arbitrary scalar field mass and coupling in a long throat spacetime, extending previous results.

Findings

Explicit formulas for self-force with arbitrary scalar mass and coupling

Confirmation of known results in the large mass limit

Extension of self-force calculations to long throat geometries

Abstract

We compute the self-force on a scalar charge at rest in the spacetime of long throat. We consider arbitrary values of the mass of the scalar field and the constant of nonmnimal coupling of the scalar field to the curvature of spacetime. We also show the coincidence of explicit calculations of self-force in the limit of large mass of the field with known results.