Abstract
Exact analytic solutions to the Schrödinger equation are known only for atomic hydrogen, and other equivalent two-body systems (see Chapt. 9). However, very high precision approximations are now available for helium, which are essentially exact for all practical purposes. This chapter summarizes the computational methods and tabulates numerical results for the ground state and several singly excited states. Similar methods can be applied to other three-body problems.
Abbreviations
- FS:
-
fine-structure
- HUM:
-
Hylleraas-Undheim-MacDonald theorem
- NFS:
-
nonfine-structure
- QED:
-
quantum electrodynamics
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Acknowledgements
The author is grateful to R. N. Hill and J. D. Morgan III for suggesting some of the material at Sect. 11.1. This work was supported by the Natural Sciences and Engineering Research Council of Canada.
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Drake, G. (2006). High Precision Calculations for Helium. In: Drake, G. (eds) Springer Handbook of Atomic, Molecular, and Optical Physics. Springer Handbooks. Springer, New York, NY. https://doi.org/10.1007/978-0-387-26308-3_11
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