Nonperturbative Effects Caused by the Radiative Component of the Electron Magnetic Moment in HydrogenLike Atomsстатья

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Дата последнего поиска статьи во внешних источниках: 19 июля 2013 г.

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[1] Sveshnikov K. A., Khomovskii D. I. Nonperturbative effects caused by the radiative component of the electron magnetic moment in hydrogenlike atoms // Moscow University Physics Bulletin. — 2012. — Vol. 67, no. 5. — P. 429–436. The lower levels of the discrete spectrum of a hydrogenlike atom are calculated within the point like nucleus approximation with nonperturbative consideration for the Schwinger interaction of the radiative component of the magnetic moment of a free electron with the Coulomb field of a nucleus. The behavior of the 1s1/2, 2s1/2, 2p1/2, and 2p3/2 levels is investigated depending on the nuclear charge values, including the range of Z > 137, where the Dirac Hamiltonian continues to be self adjoint in the presence of the Schwinger term. It is shown that the Schwinger interaction for large Z causes significant changes in the properties of the discrete spectrum; in particular, the first level that reaches the threshold of a negative continuum is 2p1/2 and this occurs at Z = 147. The behavior of the gfactor of an electron for the 1s1/2 and 2p1/2 states as a function of Z is considered as well and it is shown that for extremely large charges the correction to the gfactor due to the Schwinger term becomes a very significant effect. Keywords: free electron magnetic moment, radiative corrections, Schwinger interaction, hydrogenlike atoms, large Z. [ DOI ]

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