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How ‘spooky’ is quantum physics? The answer could be incalculable

Proof at the nexus of pure mathematics and algorithms puts ‘quantum weirdness’ on a whole new level.
  1. Davide Castelvecchi
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Albert Einstein famously said that quantum mechanics should allow two objects to affect each other’s behaviour instantly across vast distances, something he dubbed “spooky action at a distance”1. Decades after his death, experiments confirmed this. But, to this day, it remains unclear exactly how much coordination nature allows between distant objects. Now, five researchers say they have solved a theoretical problem that shows that the answer is, in principle, unknowable.

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Nature 577, 461-462 (2020)

doi: https://doi.org/10.1038/d41586-020-00120-6

References

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