标题： 极化控制的反平行偶极双组分凝聚体中的图案形成 显示英文标题

标题： Polarization-controlled pattern formation in antiparallel dipolar binary condensates

摘要： 我们通过改变极化角和陷阱纵横比，研究反平行两组分偶极玻色-爱因斯坦凝聚体中的非平衡模式形成。在有限倾斜情况下，凝聚体支持条纹序。将角度骤降至零会触发罗顿辅助的蘑菇状波纹，破坏平移序并使系统进入迷宫状纹理，而缓慢线性增加则产生寿命较长的弯曲条纹，最终汇聚为迷宫。种群不平衡强烈地影响演化：少数组分优先分裂成稳定的液滴阵列，而多数组分则相对弥散；一旦形成，液滴晶体在极化滞回中具有鲁棒性，形状变化大多可逆且晶格拓扑不变。陷阱纵横比控制初始条纹数量和不稳定性时间尺度，更紧密的轴向限制加速波纹并导致晚期产生更密集的迷宫。所有行为均出现在准二维平均场区域，超越平均场修正可忽略；因此，此处报道的液滴在自由空间中并非自束缚。观察到的纹理（如条纹、弯曲条纹和迷宫）反映了核“意大利面”形态（棒和板）的分类和不稳定路径，这些形态已知于中子星和超新星物质，突显了极化角、陷阱几何和种群不平衡作为选择和操控偶极混合物中模式的实际、实验可访问控制参数。 显示英文摘要

摘要： We investigate non-equilibrium pattern formation in an antiparallel two-component dipolar Bose-Einstein condensate by varying the polarization angle and the trap aspect ratio. At finite tilt, the condensate supports stripe order. Quenching the angle to zero triggers a roton-assisted, mushroom-like corrugation that destroys translational order and drives the system into labyrinthine textures, whereas a slow linear ramp produces long-lived curved stripes that ultimately converge to labyrinths. Population imbalance strongly biases the evolution: the minority component preferentially fragments into a stable droplet array while the majority remains comparatively diffuse; once formed, the droplet crystal is robust under polarization hysteresis with largely reversible shape changes and unchanged lattice topology. The trap aspect ratio controls both the initial stripe number and the instability timescale, with tighter axial confinement accelerating corrugation and yielding denser labyrinths at late times. All behaviors arise within a quasi-two-dimensional mean-field regime where beyond-mean-field corrections are negligible; accordingly, the droplets reported here are not self-bound in free space. The observed textures (such as stripes, curved stripes, and labyrinths) mirror the taxonomy and instability pathways of nuclear "pasta" morphologies (rods and slabs) known from neutron-star and supernova matter, highlighting polarization angle, trap geometry, and population imbalance as practical, experimentally accessible controls for selecting and steering patterns in dipolar mixtures.