弱破缺偶极子守恒中的拓扑赝戈德斯通模式
Topological Pseudo-Goldstone Modes from Weakly Broken Dipole Conservation
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中文总结 AI 辅助
本文在弱破缺偶极子守恒的中性偶极子凝聚体中，将戈德斯通模式转化为拓扑赝戈德斯通带，并通过陀螺耦合与张量流响应实现拓扑带及贝里曲率重建。
中文摘要 AI 辅助
在有序相中弱破缺连续对称性可将其戈德斯通模式转化为拓扑集体能带。我们在一个中性偶极子凝聚体中建立了这一机制，其守恒母体支持两个独立的戈德斯通相位模式。弱的实味混合钉扎了相位并选择了一个手性凝聚体。由此产生的陀螺耦合作用于其绕数极化纹理，产生了一个包含拓扑最低带的赝戈德斯通扇区。恢复偶极子守恒迫使两个模式在零频率处相遇，此时它们各自的能带陈数不再被定义。相同的母体偶极子电荷定义了一个张量流，其圆响应允许在基准体系中通过模型辅助重建低能嵌入的局域贝里曲率。解析稳定性界限和大占据极限为该机制提供了受控实现。
英文摘要
Weakly breaking a continuous symmetry in an ordered phase can convert its Goldstone modes into topological collective bands. We establish this mechanism in a neutral dipole condensate whose conserving parent supports two independent Goldstone phase modes. Weak real flavor mixing pins the phases and selects a chiral condensate. The resulting gyroscopic coupling acts on their winding polarization texture, producing a pseudo-Goldstone sector containing a topological lowest band. Restoring dipole conservation forces the two modes to meet at zero frequency, where their separate band Chern numbers cease to be defined. The same parent dipole charges define a tensor current whose circular response permits model-assisted reconstruction of low-energy embedded local Berry curvature in the benchmark regime. Analytical stability bounds and a large-occupation limit provide a controlled realization of this mechanism.
发表机构
- Fudan University（复旦大学）
- Shanghai Branch, Hefei National Laboratory（合肥国家实验室上海分部）
机构由 AI 辅助整理，请以论文原文为准。
