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A: Fachverband Atomphysik
A 39: Poster: Atomic systems in external fields
A 39.5: Poster
Thursday, March 21, 2013, 16:00–18:30, Empore Lichthof
Quantum breathing mode of charged fermions in a 2D harmonic trap — Chris McDonald2, G. Orlando2, •Jan Willem Abraham1, David Hochstuhl1, Michael Bonitz1, and Thomas Brabec2 — 1Christian-Albrechts-Universität zu Kiel, ITAP — 2Department of Physics, University of Ottawa, Ottawa, Canada
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.
[1] C. McDonald et al., submitted to Phys. Rev. Lett. (2012)