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P: Fachverband Plasmaphysik

P 19: Poster: Theorie und Modellierung

P 19.5: Poster

Thursday, February 28, 2013, 14:00–16:00, Poster EG

Breathing mode of trapped correlated quantum particles — Jan Willem Abraham, •Alexei Filinov, David Hochstuhl, Tim Schoof, and Michael Bonitz — Institut für Theoretische Physik und Astrophysik, CAU Kiel, Leibnizstr. 15

We study the quantum breathing mode (monopole mode) of finite quantum 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 [2]. 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)