The Effect of Brick Walls on the Black Hole Radiation

TL;DR

This paper investigates how the brick wall boundary condition influences black hole radiation by analyzing the zero-point energy distribution of scalar fields near Schwarzschild and Reissner-Nordström black holes, revealing interference effects.

Contribution

It provides a detailed computation of zero-point energy distributions considering the brick wall boundary, highlighting its impact on the black hole radiation spectrum and observer dependence.

Findings

Radiation spectrum depends on brick wall position and observer location

Interference effects arise from reflected scalar fields

Boundary conditions influence black hole radiation characteristics

Abstract

In order to understand the physical effect of the brick wall boundary condition, we compute the distribution of the zero-point energy of the massless scalar fields minimally coupled to the Schwarzschild and Reissner-Nordstr\"{o}m black hole backgrounds. We find that the black hole radiation spectrum depends on the positions of the brick wall and the observer, and reveals the interference effect due to the reflected field by the brick wall.