Effects of QED and beyond from the atomic binding energy

Atomic binding energies are calculated at utmost precision. A report on the current status of Lamb-shift predictions for hydrogenlike ions, including all quantum electrodynamical corrections to first and second order in the f ine structure constant alpha is presented. All relevant nuclear effects are taken into account. High-precision calculations for the Lamb shift in hydr ogen are presented. The hyperfine structure splitting and the g factor of a bound electron in the strong electromagnetic field of a heavy nucleus is c onsidered. Special emphasis is also put on parity violation effects in atom ic systems. For all systems possible investigations beyond precision tests of quantum electrodynamics are considered.