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Formation of dynamical Schrödinger cats in low-dimensional ultracold attractive Bose gases
Alexej I. Streltsov, Ofir E. Alon, Lorenz S. Cederbaum
Dynamical Schrödinger cats can be formed when a one-dimensional attractive Bose-gas cloud is scattered off a potential barrier. Once formed, these objects are stable in time. The p…
Ultrafast electron dynamics following outer-valence ionization: The impact of low-lying relaxation satellite states
Siegfried Lünnemann, Alexander I. Kuleff, Lorenz S. Cederbaum
Low-lying relaxation satellites give rise to ultrafast electron dynamics following outer-valence ionization of a molecular system is studied. To demonstrate the impact of such sate…
Many-body theory for systems with particle conversion: Extending the multiconfigurational time-dependent Hartree method
Ofir E. Alon, Alexej I. Streltsov, Lorenz S. Cederbaum
We derive a multiconfigurational time-dependent Hartree theory for systems with particle conversion. In such systems particles of one kind can convert to another kind and the total…
Intriguing electron correlation effects in the photoionization of metallic quantum--dot nanorings
Ioan Baldea, Lorenz S. Cederbaum, Jochen Schirmer
We report detailed results on ionization in metallic quantum--dot (QD) nanorings described by the extended Hubbard model at half filling obtained by exact numerical diagonalization…
Reduced density matrices and coherence of trapped interacting bosons
Kaspar Sakmann, Alexej I. Streltsov, Ofir E. Alon +1
The first- and second-order correlation functions of trapped, interacting Bose-Einstein condensates are investigated numerically on a many-body level from first principles. Correla…