Quantum Field Theory and the Helium Atom: 101 Years Later

Details Quantum Field Theory and the Helium Atom: 101 Years Later Quantum Field Theory and the Helium Atom: 101 Years Later

1996-12-11

arxiv.org/abs/hep-ph/9612330v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages, Latex, invited talk presented at "Quantum Systems: New Trends and Methods," at Minsk, June 1996; to appear in the pr

Scientific paper

Helium was first isolated on Earth in 1895, by Sir William Ramsey. One hundred and one years later, it seems like a good time to review our current theoretical understanding of the helium atom. Helium has played an important role in the development of both quantum mechanics and of quantum field theory. The early history of helium is sketched. Various aspects of the modern theory are described in some detail, including (1) the computation of fine structure to order \alpha^2 Ry and \alpha^3 Ry, (2) the decay of metastable states, and (3) Rydberg states and long-range forces. A brief survey is made of some of the recent work on the quantum field theory of He and He-like ions.

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