Ground states of spin-orbit-coupled Bose Einstein condensates in the presence of external magnetic field |
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| Institution: | 1. Institute of Theoretical Physics, State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan 030006, China;2. Department of Physics, Shanghai University, Shanghai 200444, China |
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| Abstract: | Two different kinds of spin-orbit (SO) coupling are often investigated theoretically and experimentally in atomic Bose-Einstein condensates (BECs), namely, Rashba and Dresselhaus SO couplings. We show that ground states for these two SO-coupled BECs share lots of similarities and it is impossible to distinguish them from the observation of ground states. We find that an Ioffe-Pritchard magnetic field can be utilized as a tool to distinguish them. In the presence of the Ioffe-Pritchard magnetic field, ground states manifest distinctively for the Rashba and Dresselhaus SO-coupled BECs. |
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| Keywords: | Bose Einstein condensate Spin-orbit coupling Toroidal potential Vortices Ioffe-Pritchard magnetic field |
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