Angular Stripe Phase in Spin-Orbital-Angular-Momentum Coupled Bose Condensates
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arXiv
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2019
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| _version_ | 1866913476895571968 |
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| author | Chen, Xiao-Long Peng, Shi-Guo Zou, Peng Liu, Xia-Ji Hu, Hui |
| author_facet | Chen, Xiao-Long Peng, Shi-Guo Zou, Peng Liu, Xia-Ji Hu, Hui |
| contents | We propose that novel superfluid with supersolid-like properties - angular stripe phase - can be realized in a pancake-like spin-1/2 Bose gas with spin-orbital-angular-momentum coupling. We predict a rich ground-state phase diagram, including the vortex-antivortex pair phase, half-skyrmion phase, and two different angular stripe phases. The stripe phases feature modulated angular density-density correlation with sizable contrast and can occupy a relatively large parameter space. The low-lying collective excitations, such as the dipole and breathing modes, show distinct behaviors in different phases. The existence of the novel stripe phase is also clearly indicated in the energetic and dynamic instabilities of collective modes near phase transitions. Our predictions of the angular stripe phase could be readily examined in current cold-atom experiments with $^{87}$Rb and $^{41}$K. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_1901_02595 |
| institution | arXiv |
| publishDate | 2019 |
| record_format | arxiv |
| spellingShingle | Angular Stripe Phase in Spin-Orbital-Angular-Momentum Coupled Bose Condensates Chen, Xiao-Long Peng, Shi-Guo Zou, Peng Liu, Xia-Ji Hu, Hui Quantum Gases Atomic Physics Quantum Physics We propose that novel superfluid with supersolid-like properties - angular stripe phase - can be realized in a pancake-like spin-1/2 Bose gas with spin-orbital-angular-momentum coupling. We predict a rich ground-state phase diagram, including the vortex-antivortex pair phase, half-skyrmion phase, and two different angular stripe phases. The stripe phases feature modulated angular density-density correlation with sizable contrast and can occupy a relatively large parameter space. The low-lying collective excitations, such as the dipole and breathing modes, show distinct behaviors in different phases. The existence of the novel stripe phase is also clearly indicated in the energetic and dynamic instabilities of collective modes near phase transitions. Our predictions of the angular stripe phase could be readily examined in current cold-atom experiments with $^{87}$Rb and $^{41}$K. |
| title | Angular Stripe Phase in Spin-Orbital-Angular-Momentum Coupled Bose Condensates |
| topic | Quantum Gases Atomic Physics Quantum Physics |
| url | https://arxiv.org/abs/1901.02595 |