SU(N) matter is about 3 billion times colder than deep space | EverythingScience

SU(N) matter is about 3 billion times colder than deep space

A Kyoto team led by study author Yoshiro Takahashi used lasers to cool its fermions, atoms of ytterbium, within about one-billionth of a degree of absolute zero, the unattainable temperature where all motion stops.

That's about 3 billion times colder than interstellar space, which is still warmed by the afterglow from the Big Bang.

"Unless an alien civilization is doing experiments like these right now, anytime this experiment is running at Kyoto University it is making the coldest fermions in the universe," said Rice University's Kaden Hazzard

"The payoff of getting this cold is that the physics really changes," Hazzard said. "The physics starts to become more quantum mechanical, and it lets you see new phenomena."

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