QED corrections to the correlated relativistic energy: one-photon processes
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arXiv
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| Format: | Preprint |
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2023
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| _version_ | 1866916279851417600 |
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| author | Margócsy, Adám Mátyus, Edit |
| author_facet | Margócsy, Adám Mátyus, Edit |
| contents | This work is a collection of initial calculations and formal considerations within the Salpeter-Sucher exact equal-time relativistic quantum electrodynamics framework. The calculations are carried out as preparation for the computation of pair, retardation, and radiative corrections to the relativistic energy of correlated two-spin-1/2-fermion systems. In this work, particular attention is paid to the retardation and the `one-loop' self-energy corrections, which are known to be among the largest corrections to the correlated relativistic energy. The theoretical development is supplemented with identifying formal connections to the non-relativistic quantum electrodynamics framework, which is based on a correlated but non-relativistic reference, as well as to the `$1/Z$ approach', which is built on a relativistic but independent-particle zeroth order. The two complementary directions currently provide the theoretical framework for light atomic-molecular precision spectroscopy and heavy-atom phenomena. The present theoretical efforts pave the way for relativistic QED corrections to (explicitly) correlated relativistic computations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_13887 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | QED corrections to the correlated relativistic energy: one-photon processes Margócsy, Adám Mátyus, Edit Chemical Physics This work is a collection of initial calculations and formal considerations within the Salpeter-Sucher exact equal-time relativistic quantum electrodynamics framework. The calculations are carried out as preparation for the computation of pair, retardation, and radiative corrections to the relativistic energy of correlated two-spin-1/2-fermion systems. In this work, particular attention is paid to the retardation and the `one-loop' self-energy corrections, which are known to be among the largest corrections to the correlated relativistic energy. The theoretical development is supplemented with identifying formal connections to the non-relativistic quantum electrodynamics framework, which is based on a correlated but non-relativistic reference, as well as to the `$1/Z$ approach', which is built on a relativistic but independent-particle zeroth order. The two complementary directions currently provide the theoretical framework for light atomic-molecular precision spectroscopy and heavy-atom phenomena. The present theoretical efforts pave the way for relativistic QED corrections to (explicitly) correlated relativistic computations. |
| title | QED corrections to the correlated relativistic energy: one-photon processes |
| topic | Chemical Physics |
| url | https://arxiv.org/abs/2312.13887 |