QED nuclear recoil effect in helium isotope shift
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arXiv
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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866915653412192256 |
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| author | Pachucki, Krzysztof Patkóš, Vojtěch Yerokhin, Vladimir A. |
| author_facet | Pachucki, Krzysztof Patkóš, Vojtěch Yerokhin, Vladimir A. |
| contents | We present a detailed investigation of the leading-order $mα^5$ QED correction with inclusion of the finite-nuclear-mass effects. Previously, this correction had been calculated within an expansion in the electron-nucleus mass ratio $m/M$ up to the first order. In this work, we derive formulas for the $mα^5$ QED contribution that are valid up to the second order in $m/M$, and perform its calculation for the $^3$He$-$$^4$He isotope shift, leading to an improved determination of the nuclear charge-radius difference. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_04623 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | QED nuclear recoil effect in helium isotope shift Pachucki, Krzysztof Patkóš, Vojtěch Yerokhin, Vladimir A. Atomic Physics We present a detailed investigation of the leading-order $mα^5$ QED correction with inclusion of the finite-nuclear-mass effects. Previously, this correction had been calculated within an expansion in the electron-nucleus mass ratio $m/M$ up to the first order. In this work, we derive formulas for the $mα^5$ QED contribution that are valid up to the second order in $m/M$, and perform its calculation for the $^3$He$-$$^4$He isotope shift, leading to an improved determination of the nuclear charge-radius difference. |
| title | QED nuclear recoil effect in helium isotope shift |
| topic | Atomic Physics |
| url | https://arxiv.org/abs/2512.04623 |