Erlangen 2018 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 17: Atoms in external fields
A 17.5: Vortrag
Montag, 5. März 2018, 17:15–17:30, K 2.019
Atomic systems in curved spacetime and non-geodesic motion — •Sebastian Ulbricht1,2, Robert A. Müller1,2, and Andrey Surzhykov1,2 — 1Physikalisch-Technische Bundesanstalt, Germany — 2Technische Universität Braunschweig, Germany
It is well known, that any kind of external energy density leads to a curvature of spacetime. Due to an increasing number of high precision experiments, the effects of spacetime curvature on quantum systems are widely discussed in modern physics.
Spacetime curvature as well as acceleration (non-geodesic motion) are described in the framework of General Relativity. Both of them may influence the properties of extended quantum objects like electron distribution. Treated as a small perturbation these effects lead, for example, to energy level shifts in atomic systems.
In this contribution we discuss the case of an relativistic hydrogen atom placed in the spacetime of homogeneous acceleration g (Rindler spacetime). Up to now, this model has been mostly described using perturbation theory. We present a more general approach for this scenario, going beyond perturbative methods. The energy level shifts for ground state and exited states are investigated. We analyze them for typical values of acceleration, for instance on the surface of the Earth and in the vicinity of a neutron star.