Theorem of quantum-mechanical version of Borromean rings finally proven

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SUMMARY

The theorem of the quantum-mechanical version of Borromean rings has been proven by a team of physicists led by Randy Hulet from Rice University. This breakthrough demonstrates that three particles, such as atoms or protons, can exist in a stable bound state without any two of them being able to bind independently. The concept, originally proposed by Efimov in 1970, had remained unproven in laboratory conditions until this recent publication in the online journal Science Express.

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http://news.yahoo.com/s/livescience/20091216/sc_livescience/strangephysicaltheoryprovedafternearly40years" .

"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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