发表机构
Wilczek Quantum Center and Key Laboratory of Artificial Structures and Quantum Control, School of Physics and Astronomy, Shanghai Jiao Tong University（上海交大物理与天文学院、人工结构与量子控制重点实验室、吴健雄量子中心）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究探究带时间延迟自相互作用的多体系统，发现记忆反馈可产生平衡态无的拓扑缺陷，在一维规避Mermin-Wagner定理形成非常规相变，还提出其在主动机电超材料中的实现方案。
AI 中文摘要
我们研究由记忆反馈机制介导的、具有时间延迟自相互作用的多体系统。研究表明，这类时间相互作用会产生平衡态下不存在的非平衡序和独特拓扑缺陷——具体为螺旋涡旋，其中相反涡量沿畴壁反向传播。在一维体系中，记忆反馈可使真实长程有序在弱噪声下保持稳定，从而规避Mermin-Wagner定理，形成具有动力学指数z=4的非常规有限温度相变。还提出了用主动机电超材料实现这类记忆驱动非平衡系统的物理方案，结果表明，工程化时间相互作用是非平衡多体物理的强大范式。
英文摘要
We investigate many-body systems with time-delayed self-interactions mediated by a memory-feedback mechanism. We show that such temporal interactions generate non-equilibrium orders and unique topological defects absent in equilibrium-specifically, helical vortices wherein opposite vorticities propagate in reverse directions along domain walls. In one dimension, memory feedback stabilizes true long-range order against weak noise, thereby circumventing the Mermin-Wagner theorem and resulting in an unconventional finite-temperature phase transition with a dynamical exponent $z = 4$. Physical realizations of these memory-driven non-equilibrium systems using active mechatronic metamaterials has also been proposed. These results demonstrate engineered temporal interactions as a powerful paradigm for non-equilibrium many-body physics.
