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Floquet Time Crystals could exist and break time translation symmetry

 
Face Palmer
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09/12/2016 04:18 AM
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Floquet Time Crystals could exist and break time translation symmetry
Physicists from the University of California, Santa Barbara (UCSB) and Microsoft Station Q (a Microsoft research lab located on the UCSB campus) have demonstrated that it may be possible for time crystals to physically exist.

The physicists have focused on the implication of time crystals that seems most surprising, which is that time crystals are predicted to spontaneously break a fundamental symmetry called "time-translation symmetry." To understand what this means, the researchers explain what spontaneous symmetry breaking is.

If time crystals really do spontaneously break time-translation symmetry, then the laws of nature that govern time crystals wouldn't change with time, but the time crystals themselves would change over time due to their ground-state motion, spontaneously breaking the symmetry.

Although spontaneously broken time-translation symmetry has never been observed before, almost every other type of spontaneous symmetry breaking has been. One very common example of a spontaneously broken symmetry occurs in magnets. The laws of nature do not impose which side of a magnet will be the north pole and which will be the south pole. The distinguishing feature of any magnetic material, however, is that it spontaneously breaks this symmetry and chooses one side to be the north pole. Another example is ordinary crystals. Although the laws of nature are invariant under rotating or shifting (translating) space, crystals spontaneously break these spatial symmetries because they look different when viewed from different angles and when shifted a little bit in space.

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Preta-Sana

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09/12/2016 04:22 AM
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Re: Floquet Time Crystals could exist and break time translation symmetry
Even legitimate science articles are starting to sound like the rest of the loonies around here.

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bonghit
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Face Palmer  (OP)

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09/12/2016 06:01 AM
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Re: Floquet Time Crystals could exist and break time translation symmetry
yoda
"The world will soon wake up to the reality that everyone is broke and can collect nothing from the bankrupt, who are owed unlimited amounts by the insolvent, who are attempting to make late payments on a bank holiday in the wrong country, with an unacceptable currency, against defaulted collateral, of which nobody is sure who holds title."

Never attribute to malice that which is adequately explained by stupidity.

The woman who is not pursued sets up the doctrine that pursuit is offensive to her sex, and wants to make it a felony. No genuinely attractive woman has any such desire. - H.L. Mencken, In Defense Of Women
Anonymous Coward
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09/12/2016 07:24 AM
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Re: Floquet Time Crystals could exist and break time translation symmetry
"Although spontaneously broken time-translation symmetry has never been observed before, almost every other type of spontaneous symmetry breaking has been."

Hypothetical - made-up - supposed - imagined - theorised - postulated - proposed - pretended - for argument's sake.

"The laws of nature do not impose which side of a magnet will be the north pole and which will be the south pole."

Of the 'laws' they know about. 'Spontaneously broken symmetry' is a mental concept due to perception. Time does not exist as a 'single arrow'.
Face Palmer  (OP)

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09/12/2016 09:48 AM
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Re: Floquet Time Crystals could exist and break time translation symmetry
bump
"The world will soon wake up to the reality that everyone is broke and can collect nothing from the bankrupt, who are owed unlimited amounts by the insolvent, who are attempting to make late payments on a bank holiday in the wrong country, with an unacceptable currency, against defaulted collateral, of which nobody is sure who holds title."

Never attribute to malice that which is adequately explained by stupidity.

The woman who is not pursued sets up the doctrine that pursuit is offensive to her sex, and wants to make it a felony. No genuinely attractive woman has any such desire. - H.L. Mencken, In Defense Of Women





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