Where to hide from the heat death of universe? Enter time crystals!

This thing can be used to construct a computer-like device which would carry on complex calculations in an arbitrary long loop and continue doing so forever.

Burnery!!! Science this "witch"!!!

Sciencery!!! Witch this 'burn"!!!

quote: 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.

I stopped reading there...

Maybe when i get bored, i will go back to it...

quote: There is nothing in physics that would forbid perpetual motion if its the groundstate of the system!

But there's something that forbids such systems to actually do work.

And to perform computations, you must perform work.

but yea that looks like a pretty intreting experiment. maybe i should get into nanotechnology, it looks fun...

Uh... If two masses rotate around each other because of gravity, they too change their structure without using energy... And they repeat their pattern. Am i missing a point here?

I mean seriously, if a "ground state" has zero energy then the potential created by the repulsive forces between those ions means they are not in a "ground state".

I'm aware that the article ofcourse makes simplifications to explain what's going on, but that makes it completely incoherent in its verifyability...

Until somebody shows me the difference between a sun-planet system (without radiation ofcourse) and those 100 calcium ions in their "time crystal model", i'll stand by the point that they're not proving anything.


Re: Computing
If you gain information (= decrease entropy) you'll have to use energy. And i don't exactly see the point of repeating the same calculation over and over.

Wait so does it compute anything or does it store something? In either case, you can only squeeze so much information into a certain amount of space (or to be more precise, enclose it in a minimal surface area), with black holes being the upper limit.

And i still don't get what's (simply put) special about rotation/oscillation not requiring energy.

Also keep in mind that for crystals, the atoms aren't forced to stay where they are, grid places are just better energy-wise (without interstitials, steel would be pretty brittle). Likewise, assuming time to actually become discrete is probably a fallacy. My interpretations here might be wonky, so please reply to the first point before commenting on this part.

Its not about rotation btw. Just like superfluid can only rotate in whole number multiplies of some basic speed, these time crystals only have discrete configurations. Its a quantum mechanical object spread not only in spatial but also in time dimension.