Quantum theorem shakes foundations
Quote:
Now, a preprint posted online on 14 November1 reopens the question of what the wavefunction represents — with an answer that could rock quantum theory to its core. Whereas many physicists have generally interpreted the wavefunction as a statistical tool that reflects our ignorance of the particles being measured, the authors of the latest paper argue that, instead, it is physically real.
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Their theorem effectively says that individual quantum states must “know” exactly what state they have been prepared in, or the results of measurements on them would lead to results at odds with quantum mechanics.
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Their paper is
here.
If confirmed by others, this is a ground-breaking theoretical development and of the same order of importance as Bell's Theorem (1964).
Cheers