October 23, 2021

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Antimatter cooled to near absolute zero by laser beam

4 min read

Researchers have cooled antimatter to near absolute zero for the first time — by capturing it in a magnetic trap and blasting it with concentrated laser light.

The method enabled scientists in Canada working at CERN’s Antihydrogen Laser Physics Apparatus (ALPHA) experiment to cool antimatter to temperatures just one-twentieth of a degree above absolute zero, making it over 3,000 times colder than the coldest recorded temperature in the Antarctic.

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