Sökning: "covariant evolution operator"
Hittade 1 avhandling innehållade orden covariant evolution operator.
1. Towards a relativistically covariant many-body perturbation theory - With numerical implementation to helium-like ions
Sammanfattning : The experimental results for simple atomic systems have become more and more accurate and in order to keep up with the experimental achievements the theoretical procedures have to be refined. Recent accurate experimental results obtained for helium-like ions in the low- and moderate-Z regions proclaim the importance of theoretical calculations that combines relativistic, QED and electron correlation effects. LÄS MER
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