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takyon writes:

Berkeley News reports on a Jan. 18th paper about time crystals:

If crystals have an atomic structure that repeats in space, like the carbon lattice of a diamond, why can't crystals also have a structure that repeats in time? That is, a time crystal? In a paper published online last week in the journal Physical Review Letters, the UC Berkeley assistant professor of physics describes exactly how to make and measure the properties of such a crystal, and even predicts what the various phases surrounding the time crystal should be — akin to the liquid and gas phases of ice.

This is not mere speculation. Two groups followed [Norman] Yao's blueprint and have already created the first-ever time crystals. The groups at the University of Maryland and Harvard University reported their successes, using two totally different setups, in papers posted online last year, and have submitted the results for publication. Yao is a co-author on both papers.

Time crystals repeat in time because they are kicked periodically, sort of like tapping Jell-O repeatedly to get it to jiggle, Yao said. The big breakthrough, he argues, is less that these particular crystals repeat in time than that they are the first of a large class of new materials that are intrinsically out of equilibrium, unable to settle down to the motionless equilibrium of, for example, a diamond or ruby. "This is a new phase of matter, period, but it is also really cool because it is one of the first examples of non-equilibrium matter," Yao said. "For the last half-century, we have been exploring equilibrium matter, like metals and insulators. We are just now starting to explore a whole new landscape of non-equilibrium matter."

Discrete Time Crystals: Rigidity, Criticality, and Realizations (DOI: 10.1103/PhysRevLett.118.030401) (DX)

Viewpoint: How to Create a Time Crystal

Observation of a Discrete Time Crystal

Norman Yao's website.

Previously:
Blueprint for a Time Crystal
Time Crystals Might Exist After All

Original Submission

1. "takyon" - https://soylentnews.org/~takyon/
2. "reports on a Jan. 18th paper" - http://news.berkeley.edu/2017/01/26/scientists-unveil-new-form-of-matter-time-crystals/
3. "time crystals" - https://en.wikipedia.org/wiki/Space-time_crystal
4. "Discrete Time Crystals: Rigidity, Criticality, and Realizations" - http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.118.030401
5. "DX" - https://doi.org/10.1103/PhysRevLett.118.030401
6. "Viewpoint: How to Create a Time Crystal" - http://physics.aps.org/articles/v10/5
7. "Observation of a Discrete Time Crystal" - https://arxiv.org/abs/1609.08684
8. "Norman Yao's website" - http://physics.berkeley.edu/people/faculty/norman-yao
9. "Blueprint for a Time Crystal" - https://soylentnews.org/article.pl?sid=15/07/06/144229
10. "Time Crystals Might Exist After All" - https://soylentnews.org/article.pl?sid=16/09/13/182257
11. "Original Submission" - https://soylentnews.org/submit.pl?op=viewsub&subid=18293

printed from SoylentNews, Discrete Time Crystals: Rigidity, Criticality, and Realizations on 2023-06-21 09:20:33