Stable particlelike solitons with multiply-quantized vortex lines in Bose-Einstein condensates

Ruostekoski, J. (2004) Stable particlelike solitons with multiply-quantized vortex lines in Bose-Einstein condensates. Physical review a, 70 (4): 041601R. ISSN 1050-2947

Abstract

We show that a multiply-quantized vortex line core can be energetically stable in a harmonically trapped two-component atomic Bose-Einstein condensate. The structure, in which the condensate component with the vortex line is surrounded by the second component forming a vortex ring, can be identified as a particlelike Skyrmion with a multiply-quantized winding number, and closely resembles cosmic vortons.