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HarvardScience is a publication of the Harvard Office of News and Public Affairs devoted to all matters related to science at the various schools, departments, institutes, and hospitals of Harvard University.
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Physics Professor John Doyle adjusts a dilution refrigerator, which is used to slow atoms down by chilling them. The slow-moving atoms can then be trapped and observed. Such observation may lead to a better understanding of matter in the universe.

Photo by Jon Chase

'Ultracold' trap unveils secrets of matter in the universe

Professor is after tiny particles that make up everything

November 11, 1999

Physics Professor John Doyle traps the tiny particles that make up the universe and then studies them, looking for what they can tell him about the most basic rules of nature. Specifically, Doyle is looking for evidence of discrepancies in the theory known as the Standard Model, the major theory of how the basic particles of nature interact. The Model, Doyle said, was constructed using certain assumptions about how particles behave. As measurements of those particles become more and more precise, scientists like Doyle are better able to test those assumptions. From their work comes a better understanding of how the universe operates. Doyle is one of the world's foremost experts in trapping cold particles. He has devised a method that is useful in trapping atoms and molecules of almost every kind.

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