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'Spooky action from afar' could lead to a multiverse. Here's how.

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Some interpretations of quantum mechanics suggest that our entire universe is defined by a single universal wavefunction that constantly divides and multiplies, producing a new reality for every possible quantum interaction. That’s a pretty bold statement. So how do we get there?

One of the earliest facts in the history of quantum mechanics is that matter has a wave-like property. The first to propose this was the French physicist Louis de Broglie. light can act as both a particle and a wave.