Variational calculations on multilayer stacks of dipolar Bose-Einstein condensates

Abstract

We investigate a multilayer stack of dipolar Bose-Einstein condensates in terms of a simple Gaussian variational ansatz and demonstrate that this arrangement is characterized by the existence several stationary states. Using a Hamiltonian picture we show that in an excited stack there is a coupled motion of the individual condensates by which they exchange energy. We find that for high excitations the interaction between the single condensates can induce the collapse of one of them. We furthermore demonstrate that one collapse in the stack can force other collapses, too. We discuss the possibility of experimentally observing the coupled motion and the relevance of the variational results found to full numerical investigations.

9 pages, 9 figures

References in corpus (11)

• The physics of dipolar bosonic quantum gases
• Bose-Einstein condensation of chromium
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• Anisotropic solitons in dipolar Bose-Einstein Condensates
• Ground state and elementary excitations of single and binary Bose-Einstein condensates of trapped dipolar gases
• Ground-state structure and stability of dipolar condensates in anisotropic traps
• Hybrid multi-site excitations in dipolar condensates in optical lattices
• Pitchfork bifurcations in blood-cell shaped dipolar Bose-Einstein condensates
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Cited by in corpus (5)

• A Strongly Dipolar Bose-Einstein Condensate of Dysprosium
• A general theory of flattened dipolar condensates
• Emergent structure in a dipolar Bose gas in a one-dimensional lattice
• A variational approach to Bogoliubov excitations and dynamics of dipolar Bose-Einstein condensates
• Stripe and checkerboard patterns in a stack of driven quasi-one-dimensional dipolar condensates