Casimir energies in spherically symmetric background potentials revisited

TL;DR

This paper revisits the calculation of Casimir energies in spherically symmetric potentials, simplifying the methodology and revealing surprisingly straightforward results compared to previous approaches.

Contribution

It introduces a more accessible formulation for computing Casimir energies in spherical backgrounds, making the process technically easier and the results clearer.

Findings

Simplified the calculation method for Casimir energies in spherical potentials

Achieved surprisingly simple final expressions for the energies

Enhanced understanding of the technical aspects involved

Abstract

In this paper we reconsider the formulation for the computation of the Casimir energy in spherically symmetric background potentials. Compared to the previous analysis, the technicalities are much easier to handle and final answers are surprisingly simple.