Friday, June 21, 2013

1306.4700 (Justin Lovegrove et al.)

Energetic stability of coreless vortices in spin-1 Bose-Einstein
condensates with conserved magnetization

Justin Lovegrove, Magnus O. Borgh, Janne Ruostekoski
We show that conservation of longitudinal magnetization in a spinor condensate provides a stabilizing mechanism for a coreless vortex phase-imprinted on a polar condensate. The stable vortex forms a composite topological defect with distinct small- and large-distance topology: the inner ferromagnetic coreless vortex continuously deforms to an outer singular, singly quantized polar vortex. A similar mechanism can also stabilize a nonsingular nematic texture in the polar phase. A weak magnetization is shown to destabilize a coreless vortex in the ferromagnetic phase.
View original:

No comments:

Post a Comment