English Dictionary

Lamb shift

名詞

(quantum mechanics, quantum electrodynamics) A small difference between the energy levels 2S_½ and 2P_½ of the hydrogen atom, not predicted by the Dirac equation, whose detection in the Lamb–Retherford experiment of 1947 foreshadowed the development of quantum electrodynamics (in which the discrepancy is explained to be an effect of the emission and re-absorption of virtual photons); such a difference between otherwise expectedly equal energy levels of hydrogen or any other type of atom.

日本語の意味

水素原子の2S₁/₂と2P₁/₂エネルギー準位の間に見られる微小なエネルギー差。これはディラック方程式では予測されず、1947年のランブ‐レターフォード実験により発見された現象で、量子電磁力学において仮想光子の放出と再吸収の影響で説明される。

The Lamb shift provided crucial experimental evidence that led physicists to develop quantum electrodynamics.

水素原子の2S1/2準位と2P1/2準位の微小なエネルギー差（ラムシフト）は、物理学者が量子電磁力学を発展させるきっかけとなった重要な実験的証拠を提供した。

意味（1）

(quantum mechanics, quantum electrodynamics) A small difference between the energy levels 2S_½ and 2P_½ of the hydrogen atom, not predicted by the Dirac equation, whose detection in the Lamb–Retherford experiment of 1947 foreshadowed the development of quantum electrodynamics (in which the discrepancy is explained to be an effect of the emission and re-absorption of virtual photons); such a difference between otherwise expectedly equal energy levels of hydrogen or any other type of atom.

In recent years, a significant progress has been achieved in accurate measurements of the energy levels in heavy few-electron HCI including the 1s Lamb shift in H-like uranium [3.73-75], the hyperfine structure of H-like bismuth [3.69] and the ground state energies of He-like ions [3.29,20].

Lamb shifts （ plural ）