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A: Fachverband Atomphysik

A 17: Atoms in external fields

A 17.4: Vortrag

Montag, 5. März 2018, 17:00–17:15, K 2.019

Two-electron nondispersive wave packets — •Alejandro Gonzalez Melan and Javier Madroñero Pabon — Physics department, Universidad del Valle, Cali, Colombia

We provide a full characterization of nondispersive two-electron wave packets (NDWP) found in the Floquet spectrum of driven helium. First evidence for the existence of these quantum objects which propagate along periodic trajectories of the classical three-body Coulomb problem without dispersion where provided by large numerical calculations within one- [1] and two-dimensional [2] models. We are able to identify the resonance states that play the fundamental role in the formation of these NDWP which allows us to perform an efficient treatment of the problem in the full three dimensional system.

[1] P. Schlagheck and A. Buchleitner, Eur. Phys. J. D 22, 401 (2003)

[2] J. Madroñero and A. Buchleitner, Phys. Rev. A 77, 053402 (2008)