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/sci/ - Science & Math

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5414287 No.5414287 [Reply] [Original]

Physicists at the Ludwig Maximilian University in Germany have hit a temperature lower than absolute zero, rewriting the laws of physics in the process.

This was achieved through the construction of a quantum gas using potassium atoms, attached to a standard lattice group by magnetic fields and lasers. The magnetic fields were rapidly adjusted, making the atoms transition quickly from a low energy state to the highest possible state, all while the lasers kept said atoms in place. With this negative temperature state, the gas dipped to "a few billionths of a Kelvin below absolute zero."

With this breakthrough has come some rather interesting side effects, leading to potential "new forms of matter." For example, while atoms are usually pulled downward by gravity, those below absolute zero float upwards instead. They also show characteristics much alike dark energy, which is what is (hypothetically) responsible for the expansion of the universe. It's an exciting discovery, that pushes us beyond the theoretical 'walls' of physics.

http://arxiv.org/pdf/1211.0545v1.pdf


picture unrelated

>> No.5414303

>quantum gas

oooohhhhh dem spooky quantum ghosts

>> No.5414299

I'll be honest, I'm disappointed. I thought op's pic was a tutorial from the thumbnail.

>> No.5414333

>>5414303
Why do spooky ghosts always break the rules of physics?

>> No.5414338

What's new about negative temperature?

>> No.5414341

shit man i was gona post about this

>> No.5414348

>>5414338
negative kelvin....

>> No.5414350

>>5414338
negative temperature below ABSOLUTE zero,
that´s new. It was called absolute zero because it was thought to be the lowest possible temperature

>> No.5414379

So does this mean that they went below absolute zero
or that our definition of absolute zero was off

>> No.5414401

>>5414379
kind of
my guess, based on what they're finding with particles below absolute zero, is there's no absolute zero, there's only a "turning point" and absolute zero is actually this "turning point"

>> No.5414410

>>5414287
>"a few billionths of a Kelvin below absolute zero."
>a few billionths of a degree

Is this even verifiable or is just jerking off with math?

>> No.5414420

>>5414348
>>5414350
http://en.wikipedia.org/wiki/Negative_temperature

>> No.5414510

>>5414410
It was verified. I can't put what their conclusion was into layman's terms, but essentially, we moved passed absolute zero. You can't reach absolute zero, but you can move past it. If I understand it right I would compare it to how tachyons can't move as slow as light.