Hannover 2013 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 39: Poster: Atomic systems in external fields

A 39.4: Poster

Donnerstag, 21. März 2013, 16:00–18:30, Empore Lichthof

Quantum breathing mode of trapped dipolar bosons — •Jan Willem Abraham, Alexei Filinov, Tim Schoof, David Hochstuhl, and Michael Bonitz — Christian-Albrechts-Universität zu Kiel, ITAP

We study the quantum breathing mode (monopole mode) of finite systems at low temperature from weak to strong coupling. Using an improved version of the quantum mechanical sum rule formula of Stringari et al. [1], we perform ab-initio Quantum Monte Carlo simulations to obtain the mode frequencies for dipole-interacting bosons in a harmonic trap. [1] We compare our results to those from other methods and present additional results for fermions. [3]

[1] C. Menotti, and S. Stringari, Phys. Rev. A 66, 043610 (2002)

[2] A. Filinov et al., Phys. Rev. Lett. 105, 070401 (2010)

[3] T. Schoof et al., Contrib. Plasma Phys. 51, No. 8, 687-697 (2011)