On the Gross–Pitaevskii Equation with Pumping and Decay: Stationary States and Their Stability
KAUST DepartmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Applied Mathematics and Computational Science Program
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AbstractWe investigate the behavior of solutions of the complex Gross–Pitaevskii equation, a model that describes the dynamics of pumped decaying Bose–Einstein condensates. The stationary radially symmetric solutions of the equation are studied, and their linear stability with respect to two-dimensional perturbations is analyzed. Using numerical continuation, we calculate not only the ground state of the system, but also a number of excited states. Accurate numerical integration is employed to study the general nonlinear evolution of the system from the unstable stationary solutions to the formation of stable vortex patterns.
SponsorsJ. S., A. K., and P. M. gratefully acknowledge research support by King Abdullah University of Science and Technology (KAUST). The first author acknowledges the assistance and comments from W. Bao, D. Ketcheson, P. Antonelli, N. Berloff, F. Pinsker, B. Sandstede, B. Oldeman, and the Research Computing Group from KAUST. The work of the last author has been supported by the Hertha-Firnberg Program of the FWF, Grant T402-N13.
JournalJournal of Nonlinear Science