Thermal corrections of lowest order for a helium atom

Zalialiutdinov, T.; Anikin, A.

doi:10.1103/physreva.101.052501

Cited by 11 publications

(23 citation statements)

References 24 publications

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“…It was found that thermal potential, Fig. 2, produces the dominant thermal frequency shift arising in a heat bath and could exceed well-known BBR-induced Stark shift [13].…”

Section: Introductionmentioning

confidence: 87%

“…(12). The last but one term in (13), corresponding to apparently nonphysical transition A → A + 2γ, but formally present in the sum over F states, will indeed cancel out in the final expression. The notation 2γ means here the integration over the frequencies of two photons.…”

Section: Im∆ementioning

confidence: 95%

“…In Eq. (13) we have to distinguish between the final states (F ) and (F ) for two-photon and for the one-photon transitions, respectively. It is important that the term A| Ŝ(2) η |A 2 has cancelled out in Eq.…”

Section: Im∆ementioning

confidence: 99%

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Vertex-type thermal correction to the one-photon transition rates

Solovyev,

Zalialiutdinov,

Anikin

2020

Preprint

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Thermal corrections to the one-photon spontaneous and induced transition probabilities for hydrogen and hydrogen-like ions are evaluated. The found thermal corrections are given by the vertex Feynman graph, where the vertex represents the thermal interaction between the bound electron and the nucleus. All derivations of thermal corrections to bound-bound transitions for an atom exposed to blackbody radiation (BBR) are made in a fully relativistic approach within the framework of the adiabatic S-matrix formalism. It is found that the vertex-type radiative corrections to the transition rates can be at the level of a few percent to corresponding spontaneous rates for highly excited states in the hydrogen atom. A comprehensive analysis of the vertex-type thermal corrections for hydrogen-like atomic systems is presented.

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“…It was found that thermal potential, Fig. 2, produces the dominant thermal frequency shift arising in a heat bath and could exceed well-known BBR-induced Stark shift [13].…”

Section: Introductionmentioning

confidence: 87%

Section: Im∆ementioning

confidence: 95%

See 1 more Smart Citation

Vertex-type thermal correction to the one-photon transition rates

Solovyev,

Zalialiutdinov,

Anikin

2020

Preprint

Self Cite

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“…The first corresponds to the electron-nucleus and the other is given by the interelectron thermal interaction. Then the lowest order thermal correction, see [29], can be written as…”

Section: Helium Atommentioning

confidence: 99%

Relativistic corrections to the thermal interaction of bound particles

Solovyev,

Zalialiutdinov,

Anikin

2020

Preprint

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This paper discusses relativistic corrections to the thermal Coulomb potential for simple atomic systems. The theoretical description of the revealed thermal corrections is carried out within the framework of relativistic quantum electrodymamics (QED). As a result, thermal corrections to the fine and hyperfine strucutres of atomic levels are introduced. The theory presented in this paper is based on the assumption that the atom is placed in a thermal environment created by the blackbody radiation (BBR). The numerical results allow us to expect hteir significance for modern experiments and testing the fundamental interactions. II. THERMAL COULOMB INTERACTION: RELATIVISTIC CORRECTIONSStarting with the description of the interaction of two charges, one can use the relation from textbooks (see, for example, [2]) connecting the nuclear current, j ν (x ), with the

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“…The study of the effect of equilibrium radiation on the characteristics of atomic systems is usually limited to the quantummechanical approach, in which the root-mean-squared field induced by BBR is considered as a perturbation. In our recent works, bound-state quantum electrodynamics theory at finite temperature (BS-TQED) has been developed to calculate thermal effects in atomic systems [37][38][39][40]. Within the framework of this theory and Line Profile Approach (LPA) [41], various corrections to the transition probabilities and ionization/recombination cross-sections were also calculated [37,[42][43][44][45].…”

Section: Introductionmentioning

confidence: 99%

Thermal corrections to the bound-electron $g$-factor

Zalialiutdinov,

Glazov,

Solovyev

2021

Preprint

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The influence of the blackbody radiation field on the g-factor of light hydrogenlike ions is considered within the framework of quantum electrodynamics at finite temperature for bound states. One-loop thermal corrections are examined for a wide range of temperatures. The numerical results for 1s, 2s, 2p 1/2 , and 2p 3/2 states are presented. It is shown that for excited states finite temperature corrections to the bound-electron g-factor are close to the level of current experimental uncertainty even at room temperatures and can be discerned within the measurements anticipated in the near future.

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Thermal corrections of lowest order for a helium atom

Cited by 11 publications

References 24 publications

Vertex-type thermal correction to the one-photon transition rates

Vertex-type thermal correction to the one-photon transition rates

Relativistic corrections to the thermal interaction of bound particles

Thermal corrections to the bound-electron $g$-factor

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