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

Abstract

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.

References in corpus (5)

• Fully self-consistent GW calculations for atoms and molecules
• Nonequilibrium Green's functions approach to strongly correlated few-electron quantum dots
• Invariance of the Kohn (sloshing) mode in a conserving theory
• Total energies from variational functionals of the Green function and the renormalized four-point vertex
• On the Coulomb-dipole transition in mesoscopic classical and quantum electron-hole bilayers

Cited by in corpus (10)

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• Nonequilibrium Green's functions approach to strongly correlated few-electron quantum dots
• Ultrafast Dynamics of Strongly Correlated Fermions -- Nonequilibrium Green Functions and Selfenergy Approximations
• Quantum breathing mode of trapped bosons and fermions at arbitrary coupling
• Quantum Breathing Mode of Interacting Particles in a One-dimensional Harmonic Trap
• Quantum kinetic approach to time-resolved photoionization of atoms
• Far from equilibrium field theory for strongly coupled light and matter: dynamics of frustrated multi-mode cavity QED
• Finite elements and the discrete variable representation in nonequilibrium Green's function calculations. Atomic and molecular models
• Pairing of charged particles in a quantum plasmoid