TY  - JOUR
A1  - Ionescu, Dorin Cezar
A1  - Reinhardt, Joachim
A1  - Müller, Berndt
A1  - Greiner, Walter
A1  - Soff, Gerhard
T1  - Nonlinear extensions of the Dirac equation and their implications in QED
T2  - Physical review A
N2  - We investigate the influence of additional nonlinear terms in the Dirac Lagrangian on strongly bound electron states in heavy and superheavy atoms. Upper bounds for the coupling constants are deduced by comparison with precision spectroscopy data in QED. We demonstrate that nonlinear interactions may cause significant modifications of electron binding energies in superheavy quasiatomic systems which would not be visible in ordinary atomic-physics measurements.
Y1  - 2006
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/2416
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30-29725
UR  - http://link.aps.org/abstract/PRA/v38/p616
VL  - 38
IS  - 2
SP  - 616
EP  - 620
ER  -