Condensed Matter

    

Quantum Effect Material Expansion

Authors: George Rajna

As described in a paper just published in the journal Physical Review Letters, scientists used x-rays at Brookhaven's National Synchrotron Light Source II (NSLS-II)—a U.S. Department of Energy Office of Science user facility—and two other synchrotron light sources to explore an unusual metal that expands dramatically at low temperature. [29] The ALPHA collaboration at CERN has reported the first measurements of certain quantum effects in the energy structure of antihydrogen, the antimatter counterpart of hydrogen. [28] Researchers at the CERN particle-physics laboratory in Switzerland used laser spectroscopy to scrutinize the fine structure of antihydrogen, revealing with an uncertainty of a few percent that the tiny difference in energy of states — known as the Lamb shift — is the same as it is in normal hydrogen. [27]

Comments: 22 Pages.

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[v1] 2020-03-27 05:23:14

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