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Articles posted on Wednesday, January 9, 2013

Quantum gas goes below absolute zero : Nature News & Comment

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Wednesday, January 9, 2013
Category: Science

From www.nature.com

At positive temperatures, the atoms repel, making the configuration stable. The team then quickly adjusted the magnetic fields, causing the atoms to attract rather than repel each other. “This suddenly shifts the atoms from their most stable, lowest-energy state to the highest possible energy state, before they can react,” says Schneider.

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