scholarly journals Elementary excitations of a Bose-Einstein condensate in an effective magnetic field

2007 ◽  
Vol 76 (5) ◽  
Author(s):  
D. R. Murray ◽  
Stephen M. Barnett ◽  
P. Öhberg ◽  
Damià Gomila
Keyword(s):  
Magnetic Field ◽  
Einstein Condensate ◽  
Effective Magnetic Field ◽  
Elementary Excitations ◽  
Bose Einstein Condensate ◽  
Bose Einstein

scholarly journals Three-Dimensional Skyrmions with Arbitrary Topological Number in a Ferromagnetic Spin-1 Bose-Einstein Condensate

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Huan-Bo Luo ◽  
Lu Li ◽  
Wu-Ming Liu
Keyword(s):  
Magnetic Field ◽  
Vortex Ring ◽  
Three Dimensional ◽  
Einstein Condensate ◽  
Laser Beams ◽  
Quantization Axis ◽  
Density Distributions ◽  
Bose Einstein Condensate ◽  
Bose Einstein ◽  
Topological Number

AbstractWe propose a new scheme for creating three-dimensional Skyrmions in a ferromagnetic spin-1 Bose-Einstein condensate by manipulating a multipole magnetic field and a pair of counter-propagating laser beams. The result shows that a three-dimensional Skyrmion with topological number Q = 2 can be created by a sextupole magnetic field and the laser beams. Meanwhile, the vortex ring and knot structure in the Skyrmion are found. The topological number can be calculated analytically in our model, which implies that the method can be extended to create Skyrmions with arbitrary topological number. As the examples, three-dimensional Skyrmions with Q = 3, 4 are also demonstrated and are distinguishable by the density distributions with a specific quantization axis. These topological objects have the potential to be realized in ferromagnetic spin-1 Bose-Einstein condensates experimentally.

Ground states of a mixture of pseudospin-1 2 Bose gases with interspecies spin exchange

2016 ◽  
Vol 30 (09) ◽  
pp. 1650131
Author(s):  
Rukuan Wu ◽  
Yu Shi
Keyword(s):  
Phase Diagram ◽  
Ground State ◽  
Spin Exchange ◽  
Ground States ◽  
Einstein Condensate ◽  
Bose Gases ◽  
Elementary Excitations ◽  
Bose Einstein Condensate ◽  
Bose Einstein

In this paper, we analytically find the ground states of a mixture of two species of pseudospin-[Formula: see text] Bose gases with interspecies spin exchange in quite generic parameter regimes. In the most interesting phase, the ground state is strongly entangled between the two species in a very wide parameter regime, and is an entangled Bose-Einstein condensate. The phase diagram and elementary excitations are studied.

scholarly journals SU(3) Spin–Orbit Coupled Rotating Bose–Einstein Condensate Subject to a Gradient Magnetic Field

2021 ◽  
Vol 9 ◽  
Author(s):  
Guang-Ping Chen ◽  
Pu Tu ◽  
Chang-Bing Qiao ◽  
Jin-Xia Zhu ◽  
Qi Jia ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Einstein Condensate ◽  
Orbit Coupling ◽  
Ground State Structure ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
State Structure ◽  
Gradient Magnetic Field ◽  
Bose Einstein Condensate ◽  
Bose Einstein

We consider a harmonically trapped rotating spin-1 Bose–Einstein condensate with SU(3) spin–orbit coupling subject to a gradient magnetic field. The effects of SU(3) spin–orbit coupling, rotation, and gradient magnetic field on the ground-state structure of the system are investigated in detail. Our results show that the interplay among SU(3) spin–orbit coupling, rotation, and gradient magnetic field can result in a variety of ground states, such as a vortex ring and clover-type structure. The numerical results agree well with our variational analysis results.

Stability and superfluidity of the Bose-Einstein condensate in a two-leg ladder with magnetic field

2021 ◽  
Vol 104 (2) ◽  
Author(s):  
Yue Jian ◽  
Xin Qiao ◽  
Jun-Cheng Liang ◽  
Zi-Fa Yu ◽  
Ai-Xia Zhang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Einstein Condensate ◽  
Bose Einstein Condensate ◽  
Bose Einstein
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