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P: Fachverband Plasmaphysik
P 19: Poster: Theorie und Modellierung
P 19.6: Poster
Thursday, February 28, 2013, 14:00–16:00, Poster EG
Quantum breathing mode of charged fermions in a 2D harmonic trap — Chris McDonald1, G Orlando1, Jan Willem Abraham2, David Hochstuhl2, •Michael Bonitz2, and Thomas Brabec1 — 1Department of Physics, University of Ottawa, Canada — 2Institut für Theoretische Physik und Astrophysik, CAU Kiel, Leibnizstr. 15
The N-particle time-dependent Schrödinger equation is solved to investigate the quantum breathing mode of Coulomb-interacting fermions confined in two-dimensional quantum dots. [1] The Multi-Configurational Time-Dependent Hartree-Fock method allows us to obtain the mode frequencies for up to 6 particles in the whole range of coupling parameters, from the ideal quantum gas to Wigner crystallization. Furthermore, a new approximate analytical approach to the quantum breathing mode is presented and shows very good agreement with the simulations.
[1] C. McDonald et al., submitted to Phys. Rev. Lett. (2012)