论文标题
通过自旋波动稳定的纺纱玻色子液滴
Spinor Boson Droplets Stabilized By Spin Fluctuations
论文作者
论文摘要
通过量子波动稳定的自轨液滴已在偶极气和二元玻色子混合物中实现。我们建议在这项工作中旋转摩托气体作为液滴形成的另一个候选者。对于自旋-1气体，我们发现自旋波动给出了两个不同的订单参数，在平均场图预测崩溃的情况下给出了稀释但自我捕获的状态。抗铁磁和铁磁性自旋依赖性偶联的自旋波动可以通过自旋波动稳定。抗铁磁液滴相的稳定相似，可以通过阴性二次zeeman移移。此外，系统的超平均能量取决于二次Zeeman耦合，该耦合提供了调整液滴形成及其密度的机制。我们讨论了此类纺纱液滴实现实现所需的参数。
Self-trapped droplets stabilized by quantum fluctuations have been experimentally realized in dipolar gases and binary Boson mixtures. We propose spinor Bose gases as another candidate for droplet formation in this work. For spin-1 gas, we find that spin fluctuations give a dilute but self-trapped state for two different order parameters where the mean-field picture predicts collapse. A polar droplet phase can be stabilized by spin fluctuations for both antiferromagnetic and ferromagnetic spin-dependent coupling. An antiferromagnetic droplet phase can be stabilized similarly with a negative quadratic Zeeman shift. Furthermore, the beyond mean-field energy of the system depends on the quadratic Zeeman coupling, which provides a mechanism to tune the droplet formation and its density. We discuss the parameters necessary for the experimental realization of such spinor droplets.
