Nonadiabatic geometric phase induced by a counterpart of the Stark shift E. I. Duzzioni, C. J. Villas-Bôas, S. S. Mizrahi, M. H. Y. Moussa and R. M. Serra Europhys. Lett., 72 1 (2005) 21-27 Published online: 31 August 2005 DOI: 10.1209/epl/i2005-10209-9