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arXiv · 1508.03238

Many-body tunneling dynamics of Bose-Einstein condensates and vortex states in two spatial dimensions

Raphael Beinke·Shachar Klaiman·Lorenz S. Cederbaum·Alexej I. Streltsov·Ofir E. Alon
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Abstract

In this work, we study the out-of-equilibrium many-body tunneling dynamics of a Bose-Einstein condensate in a two-dimensional radial double well. We investigate the impact of interparticle repulsion and compare the influence of angular momentum on the many-body tunneling dynamics. Accurate many-body dynamics are obtained by solving the full many-body Schrödinger equation. We demonstrate that macroscopic vortex states of definite total angular momentum indeed tunnel and that, even in the regime of weak repulsions, a many-body treatment is necessary to capture the correct tunneling dynamics. As a general rule, many-body effects set in at weaker interactions when the tunneling system carries angular momentum.

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Raphael Beinke, Shachar Klaiman, Lorenz S. Cederbaum, Alexej I. Streltsov, Ofir E. Alon. 2015-10-01. Many-body tunneling dynamics of Bose-Einstein condensates and vortex states in two spatial dimensions. https://doi.org/10.1103/physreva.92.043627

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