title: Test of many-electron QED effects in the hyperfine splitting of heavy high-Z ions.
abstract: A rigorous evaluation of the two-photon exchange corrections to the hyperfine structure in lithiumlike heavy ions is presented. As a result, the theoretical accuracy of the specific difference between the hyperfine splitting values of H- and Li-like Bi ions is significantly improved. This opens a possibility for the stringent test of the many-electron QED effects on a few percent level in the strongest electromagnetic field presently available in experiments.
authors.affiliation: Institut für Theoretische Physik, Technische Universität Dresden, Dresden, Germany.
authors.forename: A V
authors.initials: AV
authors.lastname: Volotka
authors.forename: D A
authors.initials: DA
authors.lastname: Glazov
authors.forename: O V
authors.initials: OV
authors.lastname: Andreev
authors.forename: V M
authors.initials: VM
authors.lastname: Shabaev
authors.forename: I I
authors.initials: II
authors.lastname: Tupitsyn
authors.forename: G
authors.initials: G
authors.lastname: Plunien