Geometric phases causing lifetime modifications of metastable states of hydrogen Martin-Isbjörn Trappe, Peter Augenstein, Maarten DeKieviet, Thomas Gasenzer and Otto Nachtmann Eur. Phys. J. D, 70 4 (2016) 76 Published online: 07 April 2016 DOI: 10.1140/epjd/e2016-70036-6