Quantum Effects in the Presence of Expanding Semi-Transparent Spherical Mirrors
arXiv:gr-qc/9907073 · doi:10.1088/0264-9381/16/11/315
Abstract
We study quantum effects in the presence of a spherical semi-transparent mirror or a system of two concentric mirrors which expand with a constant acceleration in a flat D-dimensional spacetime. Using the Euclidean approach, we obtain expressions for fluctuations and the renormalized value of stress-energy tensor for a scalar non-minimally coupled massless field. Explicit expressions are obtained for the energy fluxes at the null infinity generated by such mirrors in the physical spacetime and their properties are discussed.
28 pages, Paper is slightly reorganized, additional references are added