Physiker entsperren die Quantensterblichkeit mit revolutionärer Zeitkristall

> A team from TU Dortmund University recently succeeded in producing a highly durable time crystal that lived millions of times longer than could be shown in previous experiments. By doing so, they have corroborated an extremely interesting phenomenon that Nobel Prize laureate Frank Wilczek postulated around ten years ago and which had already found its way into science fiction movies. The results have now been published in **Nature Physics.**

> As physics often treats space and time on one and the same level, for example in special relativity, Frank Wilczek, a physicist at the Massachusetts Institute of Technology (MIT) and winner of the Nobel Prize in Physics, postulated in 2012 that, in addition to crystals in space, there must also be crystals in time. For this to be the case, he said, one of their physical properties would have to spontaneously begin to change periodically in time, even though the system does not experience corresponding periodic interference.

> The Dortmund physicists led by Dr. Alex Greilich have now designed a special crystal made of **indium gallium arsenide**, in which the nuclear spins act as a reservoir for the time crystal. The crystal is continuously illuminated so that a nuclear spin polarization forms through interaction with electron spins. And it is precisely this nuclear spin polarization that then spontaneously generates oscillations, equivalent to a time crystal.

> The status of the experiments at the present time is that the crystal’s lifetime is at least **40 minutes**, which is ten million times longer than has been demonstrated to date, and it could potentially live far longer.