HD⁺イオンによる量子電動学の精密なテストと基本定数の決定

S Alighanbari¹, G S Giri¹, F L Constantin^1,2

¹Institut für Experimentalphysik, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany.

Nature

|May 15, 2020

まとめ

この研究は分子イオンスペクトロスコーピーを量子物理学の正確なテストのために強化します新しい測定は極めて正確な基本定数と量子電動学の予測をテストします

科学分野:

原子,分子,光学物理学
量子力学
スペクトロスコーピー

背景:

量子電動力学 (QED) のような基本的な物理理論をテストするために,結合された3体量子システムは極めて重要です.
最も単純な分子である分子水素イオンは,安定した状態のため,高精度測定のためのユニークな機会を提供します.
これまでのスペクトロスコピーの技術では分子イオンの理論的な計算に匹敵するほどの精度がありませんでした

研究の目的:

分子イオンの回転スペクトロスコピーの精度を大幅に改善する.
量子三体予測の最も正確なテストを行うために
基本定数を決定し,仮説的な力の厳格な限界を設定する.

主な方法:

線形無線周波数トラップに収納された分子イオンを共感的に冷却した.
精度が2度近く向上した回転スペクトル検査技術
分子水素イオンの基本的回転の微細成分を測定した.

主要な成果:

量子三体予測の最も正確なテストを達成し,精度は5 × 10−11に達しました.
リッドバーグ定数と質量比を含む基本定数の組み合わせで,分数不確実性は2 × 10−11である.
陽子とデュテロン間の仮説的な第5の力に強い制約を与えました

結論:

量子三体系の理論的予測を検証する
基本定数の正確な決定は原子物理学とQEDテストの進歩です
この研究は,精度測定と新しい物理学の探求のための新しい基準を設定します.

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