Particle Production by a Relativistic Semi-Transparent Mirror in 1+3D Minkowski Spacetime

TL;DR

This paper extends the study of particle production by a relativistic semi-transparent mirror from 1+1D to 1+3D Minkowski spacetime, deriving new formulas and connecting different theoretical approaches.

Contribution

It introduces a 3D analysis of particle production, derives Bogoliubov coefficients for arbitrary trajectories, and relates the spectrum to production probability, extending previous 1+1D work.

Findings

Derived Bogoliubov coefficients for 3D trajectories

Established the relation between particle spectrum and production probability

Demonstrated equivalence of approaches and introduced a new S-matrix method

Abstract

Production of scalar particles by a relativistic, semi-transparent mirror in 1+3D Minkowski spacetime based on the Barton-Calogeracos (BC) action is investigated. The corresponding Bogoliubov coefficients are derived for a mirror with arbitrary trajectory. In particular, we apply our derived formula to the gravitational collapse trajectory. In addition, we identify the relation between the particle spectrum and the particle production probability, and we demonstrate the equivalence between our approach and the existing approach in the literature, which is restricted to 1+1D. In short, our treatment extends the study to 1+3D spacetime. Lastly, we offer a third approach for finding the particle spectrum using the S-matrix formalism.