在被困抗中观察1S-2S转换

M Ahmadi ¹, B X R Alves ², C J Baker ³

¹Department of Physics, University of Liverpool, Liverpool L69 7ZE, UK.
²Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark.
³Department of Physics, College of Science, Swansea University, Swansea SA2 8PP, UK.
⁴School of Physics and Astronomy, University of Manchester, Manchester M12 9PL, UK.
⁵Cockcroft Institute, Sci-Tech Daresbury, Warrington WA4 4AD, UK.
⁶Physics Department, CERN, CH-1211 Geneve 23, Switzerland.
⁷TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
⁸Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300, USA.
⁹Instituto de Fisica, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-972, Brazil.
¹⁰Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel.
¹¹Department of Physics and Astronomy, University of Calgary, Calgary, Alberta T2N 1N4, Canada.
¹²Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada.
¹³Department of Medical Physics and Biomedical Engineering, University College London, London WC1E 6BT, UK.
¹⁴Department of Physics, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada.
¹⁵Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan.
¹⁶Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden.
¹⁷Department of Physics and Astronomy, York University, Toronto, Ontario M3J 1P3, Canada.
¹⁸École Polytechnique Fédérale de Lausanne (EPFL), Swiss Plasma Center (SPC), Lausanne CH-1015, Switzerland.
¹⁹Department of Physics and Astronomy, University of Victoria, Victoria, British Columbia V8P 5C2, Canada.
²⁰Department of Physics and Astronomy, Purdue University, West Lafayette, Indiana 47907, USA.
²¹Soreq NRC, Yavne 81800, Israel.
²²Universitá di Pisa and Sezione INFN di Pisa, Largo Pontecorvo 3, 56127 Pisa, Italy.
²³Physics Department, Marquette University, PO Box 1881, Milwaukee, Wisconsin 53201-1881, USA.
²⁴IRFU, CEA/Saclay, F-91191, Gif-sur-Yvette Cedex, France.

⁰Department of Physics, University of Liverpool, Liverpool L69 7ZE, UK.

科学领域

原子物理
反物质研究
基本对称性

背景情况

原子的光谱在物理学中至关重要, 从历史观察到现代量子力学.
标准模型预测物质和反物质是相等的,但宇宙主要是物质,激发了反物质研究.
CPT对称性要求和反具有相同的光谱.

研究的目的

通过比较和抗光谱来试验CPT对称性.
进行迄今为止最精确的反原子测量.
调查物理规律中可能存在的不对称性.

主要方法

在磁性捕获的反原子中观察1S-2S过渡.
用243纳米的两个光子激发抗.
精确测量反1S-2S转换的频率.

主要成果

反1S-2S转换的测量频率与相一致.
结果证实CPT不变度的相对精度约为2×10<sup>-10</sup>.
这是对抗原子进行的最精确的测量.

结论

观察到的抗光谱与相匹配,支持CPT对称性.
这一发现有助于理解宇宙中的物质-反物质不对称性.
这项研究展示了用于反物质研究和精度测量的先进技术.

在被困抗中观察1S-2S转换

概括

科学领域

背景情况

研究的目的

主要方法

主要成果

结论

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在被困抗中观察1S-2S转换

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概括

科学领域

背景情况

研究的目的

主要方法

主要成果

结论

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