2008/06/04 by J. T. Mendonça, J. T. Mendonca, Gert Brodin +2
Physics and Astronomy · #Mechanical and Optical Resonators #Quantum Electrodynamics and Casimir Effect #Quantum Mechanics and Applications #hep-ph #quant-ph
paper · pdf · doi:10.1016/j.physleta.2008.06.084
published as Phys.Lett.A372:5621-5624,2008 · 5 pages, version to appear in Physics Letters A
arxiv created 2008/06/04 · openalex publication_date 2008/07/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Two different quantum processes are considered in a perturbed vacuum cavity: time refraction and dynamical Casimir effect. They are shown to be physically equivalent, and are predicted to be unstable, leading to an exponential growth in the number of photons created in the cavity. The concept of an effective Unruh acceleration for these processes is also introduced, in order to make a comparison in terms of radiation efficiency, with the Unruh radiation associated with an accelerated frame in unbounded vacuum.