Expansion of bound-state energies in powers of m/M

Details Expansion of bound-state energies in powers of m/M Expansion of bound-state energies in powers of m/M

2000-12-05

arxiv.org/abs/hep-ph/0012053v1

Phys.Rev.Lett. 87 (2001) 013001

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, revtex

Scientific paper

10.1103/PhysRevLett.87.013001

We describe a new approach to computing energy levels of a non-relativistic bound-state of two constituents with masses M and m, by a systematic expansion in powers of m/M. After discussing the method, we demonstrate its potential with an example of the radiative recoil corrections to the Lamb shift and hyperfine splitting relevant for the hydrogen, muonic hydrogen, and muonium. A discrepancy between two previous calculations of O(alpha(Zalpha)^5 m^2/M) radiative recoil corrections to the Lamb shift is resolved and several new terms of O(alpha(Zalpha)^5 m^4/M^3) and higher are obtained.

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