what did they mean by this?

>>8596243
Either their measuring equipment fucked up or everything we know is wrong. Temperature is a measure of how much heat energy something has. It can't have less than none. That's not just impossible, that's advanced impossible.

>>8596243

Literally just take any stat mech course.

>>8596243
That Munich is a meme university.

>>8596243

Temperature was a mistake. They should have defined it as β=1/Tk with β∈(-∞,∞)

>>8596253
It can have more than infinite so it overflows into the negative and keeps rising until you hit the absolute max temperature -0K.

>>8596268
Is this the "universe is a faulty calculator" hypothesis?

>>8596253
>That's not just impossible, that's advanced impossible.

Rules are made to be broken

>>8596243
It just means that the set of possible states of the particles in the solution are dictated not by repulsive forces, but by attractive ones.

In a physicist's interpretation of thermodynamics, a positive temperature denotes the set of possible future states that's dictated by repulsive/collision-based electromagnetic forces permeating the material. A negative temperature is one that allows collisions to behave unintuitively, with particles attracting where they would usually repulse, though still never quite meeting, according to the paper. A zero temperature has only one possible state, and that's the state it's already in. They never got to any observed zero temperature, which would be a holy grail in particle physics. They just moved enough entropy around to get a thermodynamic negative temperature.

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>>8596268
>>8596253
holy shit those undergrads are pathetic. why the fuck do you comment on things you do not know. negative temp are well known in physics. just stop living.

>>8596243
Why not read the whole thing where it tells you?
>https://www.mpg.de/research/negative-absolute-temperature

>>8596287
Literally kill yourself.

OK, dipshit here. Is this a reasonable interpretation?

Entropy is always increasing, so to reach an entropy of zero (of a cooled ideal gas) at absolute zero, the entropy outside the system has to increase.

If entropy is zero, it implies that only one thermodynamic state is available (a la >>8596276). Does entropy *decrease* in a system below absolute zero, and if so does that mean that one could in principle isolate a thermodynamic state that isn't the lowest energy configuration? Kind of like an anti-Boltzmann distribution.

>>8596253
>Temperature is a measure of how much heat energy
No it's not.

First of all, heat is per definition always an amount of energy TRANSFERRED. Nothing "contains" heat. Secondly temperature is a measure of the average kinetic energy of the molecules of a mass.

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>>8596253
>Temperature is a measure of how much heat energy something has

>the universe integer overflows

having a hard time believing this