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Eternal Change for No Energy: A Time Crystal Finally Made Real

The Quanta Podcast

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Time Crystal - A New Phase of Matter

A floke time crystal exhibits the kind of behavior envisioned by wheel check, but only while being periodically driven by an external energy source. This kind of time crystal circumvents the failure of weel check's original idea by never professing to be in thermal equilibrium. Because it's a many body localized system, spins or other parts are unable to settle into equilibrium. But the system doesn't heat up either, despite being pumped by a lazer or other driver. Instead, it cycles back and forth indefinitely between localized states.

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