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arXiv · 1303.4469

D-brane solitons and boojums in field theory and Bose-Einstein condensates

Kenichi Kasamatsu·Hiromitsu Takeuchi·Muneto Nitta
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Abstract

In certain field theoretical models, composite solitons consisting of a domain wall and vortex lines attached to the wall have been referred to as D-brane solitons. We show that similar composite solitons can be realized in phase-separated two-component Bose-Einstein condensates. We discuss the similarities and differences between topological solitons in the Abelian-Higgs model and those in two-component Bose-Einstein condensates. Based on the formulation of gauge theory, we introduce the "boojum charge" to characterize the "D-brane soliton" in Bose-Einstein condensates.

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Kenichi Kasamatsu, Hiromitsu Takeuchi, Muneto Nitta. 2013-03-19. D-brane solitons and boojums in field theory and Bose-Einstein condensates. https://doi.org/10.1088/0953-8984%2F25%2F40%2F404213

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