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- Zoe Z. Yan
- MIT–Harvard Center for Ultracold Atoms, Research Laboratory of Electronics, and Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
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- Yiqi Ni
- MIT–Harvard Center for Ultracold Atoms, Research Laboratory of Electronics, and Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
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- Carsten Robens
- MIT–Harvard Center for Ultracold Atoms, Research Laboratory of Electronics, and Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
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- Martin W. Zwierlein
- MIT–Harvard Center for Ultracold Atoms, Research Laboratory of Electronics, and Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
説明
<jats:title>Immersing the impurities</jats:title> <jats:p> In solids, moving electrons can polarize their environment, the ionic crystal lattice, creating quasi particles known as polarons. An analogous phenomenon can be studied in quantum gases by placing impurity atoms into a much denser gas of atoms of a different species. Yan <jats:italic>et al.</jats:italic> studied the behavior of Bose polarons, quasiparticles consisting of impurity atoms of potassium-40 immersed in a Bose gas of sodium-23 atoms. In the vicinity of a quantum critical point, the lifetime of the polarons followed the so-called Planckian scale. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6487" page="190" related-article-type="in-this-issue" vol="368" xlink:href="10.1126/science.aax5850">190</jats:related-article> </jats:p>
収録刊行物
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- Science
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Science 368 (6487), 190-194, 2020-04-10
American Association for the Advancement of Science (AAAS)