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Quantum Excitations in Time-Dependent Backgrounds

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.

preprint2013arXivOpen access
Matthew KolopanisTanmay Vachaspati
cond-mat.otherhep-phmath-phmath.MPgr-qchep-th
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Open access2 authors6 topics
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Matthew KolopanisTanmay Vachaspati

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