Quantum Excitations in Time-Dependent Backgrounds

Abstract

We give a technique for calculating the occupation number of quantum fields in time-dependent backgrounds by using the relation between one-dimensional {\em quantum} oscillators and two-dimensional {\em classical} oscillators. We illustrate our method by giving closed analytical results for the time-dependent spectrum of occupation numbers during gravitational collapse in 3+1 dimensions.

5 pages; 3 figures. Clarifying remarks added. Version published in PRD

References in corpus (2)

• Observation of Incipient Black Holes and the Information Loss Problem
• Quantum Radiation from Quantum Gravitational Collapse

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• Unitarity in Reissner-Nordström background: striding away from information loss
• Gravitational collapse and Hawking-like radiation of the shell in AdS spacetime
• Formation of the Hayward black hole from a collapsing shell
• Quantum radiation of a collapsing shell in three-dimensional AdS spacetime revisited