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Two-Time Greens Function Method

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Handbook of Relativistic Quantum Chemistry

Abstract

In this chapter we describe the Two-Time Greens Function (TTGF) method developed by V. M. Shabaev. This method allows derivation of the formulas for the energy shift and other QED effects. Unlike the preceeding methods, the TTGF one is suitable not only in the case of single isolated, but also for the (quasi-)degenerate levels. Starting from the very basic principles and concepts of QED, we will demonstrate, how to derive basic formulas with the help of TTGF method and apply them to the case of many-electron systems.

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Acknowledgements

Stimulating discussions with Prof. V. M. Shabaev and Prof. P. Indelicato are gratefully acknowledged.

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Authors and Affiliations

  1. Institute of Physics, Kassel University, Heinrich-Plett-Str. 40, D-34132, Kassel, Germany

    Anton N. Artemyev

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  1. Anton N. Artemyev
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Editor information

Editors and Affiliations

  1. Beijing National Laboratory for Molecular Sciences, Institute of Theoretical and Computational Chemistry, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering and Center for Computational Science and Engineering, Peking University, Beijing, China

    Wenjian Liu

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Artemyev, A. (2017). Two-Time Greens Function Method. In: Liu, W. (eds) Handbook of Relativistic Quantum Chemistry. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-40766-6_28

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