TY - JOUR
T1 - Connection of vortices between spatially different phases in two-component bose-einstein condensates
AU - Kasamatsu, Kenichi
AU - Takeuchi, Hiromitsu
AU - Nitta, Muneto
AU - Tsubota, Makoto
N1 - Funding Information:
Acknowledgements K.K. acknowledges the supports of Grant-in-Aid for Scientific Research from JSPS (Grant No. 21740267). H.T. acknowledges the support of a Grant-in-Aid for JSPS Fellows (Grant No. 199748). The work of M.N. is supported in part by Grant-in-Aid for Scientific Research from MEXT-Japan (Grant No. 20740141). M.T. acknowledges the support of a Grant-in-Aid for Scientific Research from JSPS (Grant No. 21340104) and a Grant-in-Aid for Scientific Research on Priority Areas from MEXT (Grant No. 17071008).
PY - 2010/1
Y1 - 2010/1
N2 - We study interfacial topological defects called boojums, a vortex ending or a connecting point of two kinds of vortex cores, in rotating two-component Bose-Einstein condensates. First, we show that the boojum exists at a vortex ending that connects to the interface of the strongly phase-separated condensates. Next, we study various boojums appearing between two phases characterized by different vortex structures, where the intercomponent s-wave scattering lengths are spatially varied. Using three-dimensional simulations of the Gross-Pitaevskii equations, we reveal the detailed structure of the boojums by visualizing its density distribution and effective superflow vorticity.
AB - We study interfacial topological defects called boojums, a vortex ending or a connecting point of two kinds of vortex cores, in rotating two-component Bose-Einstein condensates. First, we show that the boojum exists at a vortex ending that connects to the interface of the strongly phase-separated condensates. Next, we study various boojums appearing between two phases characterized by different vortex structures, where the intercomponent s-wave scattering lengths are spatially varied. Using three-dimensional simulations of the Gross-Pitaevskii equations, we reveal the detailed structure of the boojums by visualizing its density distribution and effective superflow vorticity.
KW - Bose-Einstein condensate
KW - Multicomponent
KW - Topological defect
KW - Vortex
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U2 - 10.1007/s10909-009-9985-9
DO - 10.1007/s10909-009-9985-9
M3 - Article
AN - SCOPUS:73349103125
SN - 0022-2291
VL - 158
SP - 99
EP - 104
JO - Journal of Low Temperature Physics
JF - Journal of Low Temperature Physics
IS - 1-2
ER -