Atoms through the looking glass – a relativistic challenge

摘要: The search for weak-interaction induced atomic parity non-conservation, initiated in the 70s, challenges both theory and experiment. Since weak interaction is very short-range, effects increase rapidly with nuclear charge, as . focus has thus been on heavy atoms, where relativistic are essential, size must be taken into account. generalization of many-body methods to systems involved computational formal difficulties, incorporating developed quantum electrodynamics. Twenty years ago, ability was emerging treat pair correlation a framework. application many-electron opened comparison many properties, such isotope shifts, hyperfine structure anomalies, which reflect properties. In addition, simultaneous violation time reversal symmetry involves different types effects, including ”Schiff moments”. Comparison between computed experimental results highly charged hydrogen-like provides test theoretical numerical treatment electron-nucleus description distributions.