pilot-wave theory – Quanta Magazine

Where Quantum Probability Comes From

Sean Carroll — Mon, 09 Sep 2019 15:00:44 +0000

In A Philosophical Essay on Probabilities, published in 1814, Pierre-Simon Laplace introduced a notorious hypothetical creature: a “vast intelligence” that knew the complete physical state of the present universe. For such an entity, dubbed “Laplace’s demon” by subsequent commentators, there would be no mystery about what had happened in the past or what would happen at any time in the future.

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New Support for Alternative Quantum View

Dan Falk — Mon, 16 May 2016 21:08:33 +0000

Of the many counterintuitive features of quantum mechanics, perhaps the most challenging to our notions of common sense is that particles do not have locations until they are observed. This is exactly what the standard view of quantum mechanics, often called the Copenhagen interpretation, asks us to believe. Instead of the clear-cut positions and movements of Newtonian physics, we have a cloud of...

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Fluid Tests Hint at Concrete Quantum Reality

Natalie Wolchover — Tue, 24 Jun 2014 16:00:38 +0000

For nearly a century, “reality” has been a murky concept. The laws of quantum physics seem to suggest that particles spend much of their time in a ghostly state, lacking even basic properties such as a definite location and instead existing everywhere and nowhere at once. Only when a particle is measured does it suddenly materialize, appearing to pick its position as if by a roll of the dice.

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