Galilean invariance and gauge dependence of radiative capture
- Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany) and Institute for Materials Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305 8573 (Japan)
The radiative electron capture in nonrelativistic atomic collisions is normally considered by using the Schroedinger equation. We show that the capture cross section obtained from this equation is Galilean-invariant. This result follows under quite general conditions and holds irrespectively of the accuracy of wave functions describing the charged particles. In contrast, this accuracy is crucial for gauge independence of the cross section and we demonstrate that it is the gauge dependence which has been misinterpreted for a long time as the Galilean noninvariance.
- OSTI ID:
- 20787266
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 73; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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