螺旋自旋-轨道耦合诱导的超高振幅Peregrine孤子
Ultra-high-amplitude Peregrine solitons induced by helicoidal spin-orbit coupling
AI总结:
本文在具有螺旋自旋-轨道耦合的非均匀玻色-爱因斯坦凝聚体中发现了超高振幅的反常Peregrine孤子,并证明其归一化振幅可趋于无限大,且存在于弱调制不稳定性区域,具备实验观测可行性。
摘要:
在具有螺旋自旋-轨道(SO)耦合的空间非均匀玻色-爱因斯坦凝聚体模型框架中,我们在平坦背景和周期背景上发现了具有超高振幅的反常Peregrine孤子(PSs)。我们探讨了SO耦合强度和螺旋螺距在这些异常高Peregrine孤子产生中的作用,并发现其振幅(相对于背景高度归一化)可以达到无限大的值。对同一系统中调制不稳定性(MI)的研究表明,这些Peregrine孤子存在于相对较弱的MI范围内,从而保持了实验观测的可行性。
英文摘要:
In the framework of the model of a spatially non-uniform Bose-Einstein condensate with helicoidal spin-orbit (SO) coupling, we find abnormal Peregrine solitons (PSs) on top of flat and periodic backgrounds, with ultra-high amplitudes. We explore the roles of the SO coupling strength and helicity pitch in the creation of these anomalously tall PSs and find that their amplitude, normalized to the background height, attains indefinitely large values. The investigation of the modulation instability (MI) in the same system demonstrates that these PSs exist in a range of relatively weak MI, maintaining the feasibility of their experimental observation.
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