International Conference on Exotic Atoms and Related Topics - EXA2014

High-precision measurements of the gyromagnetic factor (g-factor) of the electron bound in highly-charged ions have provided the most stringent tests of bound-state Quantum electrodynamics (BS-QED) to date [1,2] as well as the most precise determination of the electron mass [3]. In our experiment, a single highly-charged ion is produced and stored in a triple-Penning trap system which is...

Atomic Parity Violation (APV) opens the path to improved determination of electroweak parameters. This can be done by measuring light shifts, which permit the mapping of weak interaction effects on the energy splitting of the magnetic substates in a single trapped Ra+ ion. A particular experimental requirement for a light shift measurement is the localization of the ion within a fraction of an...

Phenomena of quantum reflection enables existence of long-living quantum states of antihydrogen, bouncing above material surface in gravitational field of the Earth. The typical life-time of such states is of order of $0.1$ s. Such states become a promising laboratory for studding gravitational properties of antimatter. We dicsuss methods of precision measuring energy level spacing based on...

We analyse the non-relativistic approximation of the Dirac equation for slow fermions moving in spacetimes with a static metric, caused by the weak gravitational field of the Earth and a chameleon field, and derive the most general effective gravitational potential, induced by a static metric of spacetime. The derivation of the non-relativistic Hamilton operator of the Dirac equation is...

Cold antihydrogen promises a unique opportunity to study the properties of atomic antimatter, and via comparisons with its well-studied matter-counterpart, the possibility to test fundamental symmetries such as CPT invariance. We report the first observation of positron spin flip transitions between hyperfine levels of ground state antihydrogen () and the first experimental constraint on the...