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Author Topic: ‘Time Crystals’ Could Upend Physicists’ Theory of Time  (Read 1427 times)

Offline Amaterasu

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From: http://www.wired.com/wiredscience/2013/04/time-crystals/

Quote
In February 2012, the Nobel Prize-winning physicist Frank Wilczek decided to go public with a strange and, he worried, somewhat embarrassing idea. Impossible as it seemed, Wilczek had developed an apparent proof of “time crystals” — physical structures that move in a repeating pattern, like minute hands rounding clocks, without expending energy or ever winding down. Unlike clocks or any other known objects, time crystals derive their movement not from stored energy but from a break in the symmetry of time, enabling a special form of perpetual motion.

“Most research in physics is continuations of things that have gone before,” said Wilczek, a professor at the Massachusetts Institute of Technology. This, he said, was “kind of outside the box.”

Wilczek’s idea met with a muted response from physicists. Here was a brilliant professor known for developing exotic theories that later entered the mainstream, including the existence of particles called axions and anyons, and discovering a property of nuclear forces known as asymptotic freedom (for which he shared the Nobel Prize in physics in 2004). But perpetual motion, deemed impossible by the fundamental laws of physics, was hard to swallow. Did the work constitute a major breakthrough or faulty logic? Jakub Zakrzewski, a professor of physics and head of atomic optics at Jagiellonian University in Poland who wrote a perspective on the research that accompanied Wilczek’s publication, says: “I simply don’t know.”

Now, a technological advance has made it possible for physicists to test the idea. They plan to build a time crystal, not in the hope that this perpetuum mobile will generate an endless supply of energy (as inventors have striven in vain to do for more than a thousand years) but that it will yield a better theory of time itself.

More at link.
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Offline Somamech

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Re: ‘Time Crystals’ Could Upend Physicists’ Theory of Time
« Reply #1 on: May 01, 2013, 10:57:16 am »
Nice find Amy :)

Thumbs up and some gold :D

Offline andolin

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Re: ‘Time Crystals’ Could Upend Physicists’ Theory of Time
« Reply #2 on: May 06, 2013, 11:55:34 am »
It looks like mainstream science is paying attention to former Nobel Prize winners. I wonder what would have been reported if we weren't dealing with a Nobel Laureate.
They are building an "Ion Trap" at Berkley to attempt to build a time crystal.
Interesting stuff indeed.
Quote
The Berkeley team, led by Xiang Zhang and Hartmut Häffner, will attempt to build a time crystal by introducing 100 calcium ions into a 100-micron wide ion trap. The calcium ions will be confined by electric fields to form a crystalline ring, which will then be induced to rotate under the influence of a static magnetic field. According to the group's calculations, this ring should settle into the ground state when the atoms are pre-cooled with lasers to around one-billionth of a degree above absolute zero.

Read more at: http://phys.org/news/2013-05-crystals-rotating-ion.html#jCp
http://phys.org/news/2013-05-crystals-rotating-ion.html

Andy

Offline Somamech

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Re: ‘Time Crystals’ Could Upend Physicists’ Theory of Time
« Reply #3 on: May 06, 2013, 12:09:01 pm »
Nice find Andy :)

If anything has anything to do with light and sound its a bloody crystal :D

Light and sound create experience ;)

 


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