內容：

We present a general driving protocol for many-body systems to generate a sequence of prethermal regimes, each exhibiting a lower symmetry than the preceding one [1]. We provide an explicit construction of effective Hamiltonians exhibiting these symmetries. This imprints emergent quasi-conservation laws hierarchically, enabling us to engineer the respective symmetries and concomitant orders in nonequilibrium matter. We provide explicit examples, including spatiotemporal and topological phenomena, as well as a spin chain realizing the symmetry ladder SU(2)→U(1)→Z2→E. Based on this framework, we further construct a protocol that leads to emergent massive Nambu–Goldstone quasi-particles with tunable spectral mass gap and lifetime [2]. 

References: [1] arXiv:2402.13519 [2] arXiv:2409.01902

人物介紹：

趙宏政，北京大學物理學院凝聚態所助理教授。2017年于山東大學泰山學堂本科畢業，2021年倫敦帝國理工學院博士畢業，隨后兩年在德國馬克斯-普朗克復雜系統物理研究所從事博士后研究工作，后于2023年底加入北大物理學院。長期從事非平衡多體動力學理論研究，研究興趣包括量子熱化，驅動系統，強關聯系統，量子模擬與量子計算。