Dynamics of Topological Defects in a Rashba Spin-Orbit Coupled Bose-Einstein Condensate
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arXiv
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866915478202482688 |
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| author | Liu, Sheng Zhang, Yong-Sheng |
| author_facet | Liu, Sheng Zhang, Yong-Sheng |
| contents | We investigate the quench dynamics of a two-dimensional Rashba spin-orbit coupled Bose-Einstein condensate. Our study focuses on quenching the system from a zero-momentum phase to a plane-wave phase. During this quench, topological defects emerge in the form of vortices. These vortices and anti-vortices exhibit a random spatial distribution with equal numbers, mirroring the core principles of Kosterlitz-Thouless physics. In a uniform system, we observe an exponential scaling of both the vortex production time and the vortex number with the quench rate, consistent with the conventional Kibble-Zurek mechanism. The decay of which adheres to a logarithmic law, aligning with experimental observations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_18850 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Dynamics of Topological Defects in a Rashba Spin-Orbit Coupled Bose-Einstein Condensate Liu, Sheng Zhang, Yong-Sheng Quantum Gases Quantum Physics We investigate the quench dynamics of a two-dimensional Rashba spin-orbit coupled Bose-Einstein condensate. Our study focuses on quenching the system from a zero-momentum phase to a plane-wave phase. During this quench, topological defects emerge in the form of vortices. These vortices and anti-vortices exhibit a random spatial distribution with equal numbers, mirroring the core principles of Kosterlitz-Thouless physics. In a uniform system, we observe an exponential scaling of both the vortex production time and the vortex number with the quench rate, consistent with the conventional Kibble-Zurek mechanism. The decay of which adheres to a logarithmic law, aligning with experimental observations. |
| title | Dynamics of Topological Defects in a Rashba Spin-Orbit Coupled Bose-Einstein Condensate |
| topic | Quantum Gases Quantum Physics |
| url | https://arxiv.org/abs/2412.18850 |