http://news.yahoo.com/s/livescience/20091216/sc_livescience/strangephysicaltheoryprovedafternearly40years" [Broken].(adsbygoogle = window.adsbygoogle || []).push({});

"Efimov theorized an analog to the rings using particles: Three particles (such as atoms or protons or even quarks) could be bound together in a stable state, even though any two of them could not bind without the third. The physicist first proposed the idea, based on a mathematical proof, in 1970. Since then, no one has been able to demonstrate the phenomenon in the lab - until recently.

A team of physicists led by Randy Hulet of Rice University in Houston finally achieved the trio of particles, and published their findings in the online journal Science Express."

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# Theorem of quantum-mechanical version of Borromean rings finally proven

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