Nonequilibrium properties of strongly correlated artificial atoms - a Green's functions approach

Details Nonequilibrium properties of strongly correlated artificial atoms - a Green's functions approach Nonequilibrium properties of strongly correlated artificial atoms - a Green's functions approach

2008-10-15

arxiv.org/abs/0810.2633v1

J. Phys. A 42, 214020 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

A nonequilibrium Green's functions (NEGF) approach for spatially inhomogeneous, strongly correlated artificial atoms is presented and applied to compute the time-dependent properties while starting from a (correlated) initial few-electron state at finite temperatures. In the regime of moderate to strong coupling, we consider the Kohn mode of a three-electron system in a parabolic confinement excited by a short pulsed classical laser field treated in dipole approximation. In particular, we numerically confirm that this mode is preserved within a conserving (e.g. Hartree-Fock or second Born) theory.

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