Tackling the Gross-Pitaevskii energy functional with the Sobolev gradient - Analytical and numerical results

Details Tackling the Gross-Pitaevskii energy functional with the Sobolev gradient - Analytical and numerical results Tackling the Gross-Pitaevskii energy functional with the Sobolev gradient - Analytical and numerical results

2009-06-17

arxiv.org/abs/0906.3206v1

Physics

Quantum Physics

30 pages, 9 figures, 3 tables

Scientific paper

In the first part of this contribution we prove the global existence and uniqueness of a trajectory that globally converges to the minimizer of the Gross-Pitaevskii energy functional for a large class of external potentials. Using the method of Sobolev gradients we can provide an explicit construction of this minimizing sequence. In the second part we numerically apply these results to a specific realization of the external potential and illustrate the main benefits of the method of Sobolev gradients, which are high numerical stability and rapid convergence towards the minimizer.

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