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Correspondence
Nature 448, 129 (12 July 2007) | doi:10.1038/448129b; Published online 11 July 2007
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Space-time safe — at least until the LHC switches on
Thomas Dent1
- Theoretical Physics, University of Heidelberg, Philosophenweg 16, 69120 Heidelberg, Germany
You are either wildly optimistic, or confused, to suggest in your News Feature 'Extreme light' (Nature 446, 16–18; 2007) that extreme laser experiments could "rip apart the fabric of space and time".The phenomena of Unruh radiation and Schwinger pair production, which are the motivation for extreme laser experiments, simply probe the behaviour of quantum fields on a fixed, smooth space-time.
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