title: Light-induced conical intersections: topological phase, wave packet dynamics, and molecular alignment.
abstract: In previous publications (J. Phys. B: At., Mol. Opt. Phys.2008, 41, 221001; J. Phys. B: At., Mol. Opt. Phys. 2011, 44, 045603) a novel and physically interesting phenomenon was found in the field of light-matter interactions. It was shown theoretically that exposing a molecule to a laser field can give rise to the appearance of so-called light-induced conical intersections (LICIs). The existence of such LICIs may change significantly the field free physical properties of a molecular system. In this article we review the LICIs in diatomics and provide a new insight to the LICI phenomenon. The sodium dimer is chosen as an explicit sample system. We calculated the Berry phase for a contour that surrounds the point of LICI and found it to be π, which is the same value as for the case of a "natural" CI in triatomic or larger molecules. We also present results to stress the impact of LICIs on molecular wave packet dynamics and molecular alignment in different electronic states.
authors: Department of Information Technology, University of Debrecen, PO Box 12, H-4010 Debrecen, Hungary.
authors: Gábor J
authors: GJ
authors: Halász
authors: Milan
authors: M
authors: Šindelka
authors: Nimrod
authors: N
authors: Moiseyev
authors: Lorenz S
authors: LS
authors: Cederbaum
authors: Ágnes
authors: Á
authors: Vibók