Physics
One way to explain why time only moves forward is the quantum arrow of time, and it has major implications for both the universe’s early period and its eventual demise
By Leah Crane
Was there entanglement at the dawn of time?
Panzer/Shutterstock
In the beginning, there was no quantum entanglement. That is the conclusion of a study exploring the so-called entanglement past hypothesis. The finding is part of a quantum reinvention of our notions about why time only flows in one direction.
When two particles become entangled, each can no longer be thought of as an independent object – their properties are tied together, even if they are physically far…
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