Carrock Posted April 18, 2019 Share Posted April 18, 2019 From https://www.nature.com/articles/s41467-019-08426-4 30 minutes ago, beecee said: Here we consider the decoherence of a “black hole Schrödinger cat”—a non-local superposition of a Schwarzschild black hole in two distinct locations—due to its Hawking radiation. The resulting decoherence rate turns out to be given by a surprisingly simple equation. Moreover, and in contrast to known cases of decoherence, this rate does not involve Planck’s constant ħ. Another quote from that paper: Quote They also present the decoherence by Hawking radiation as something fundamental and unavoidable, just as we do. Ouch. From a reference from that paper: Joos, E. et al. Decoherence and the Appearance of a Classical World in Quantum Theory. (Springer, Berlin Heidelberg, 2003). Quote Decoherence is caused by the information flowing from the system into its environment and the resulting formation of records of its selected observables in that environment So a whole paper with quantified maths about an arbitrary split between quantum superposition and a purely classical environment i.e. no superposition of different 'records.' This would only be valid if the Copenhagen interpretation was a distinct theory rather than an interpretation. Dubious theory isn't confined to SF speculation section... Link to comment Share on other sites More sharing options...
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