科研之友
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摘要
In certain field theoretical models, composite solitons consisting of a domain wall and vortex lines attached to the wall have been referred to as %26apos;D-brane solitons%26apos;. 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. On the basis of the formulation of gauge theory, we introduce the %26apos;boojum charge%26apos; to characterize the D-brane soliton in Bose-Einstein condensates.
- 出版日期2013-10-9
