AI 中文总结
本研究提出时间与动量分辨隧穿光谱方案，用于探测超越高频极限的Floquet驱动系统瞬时能谱，经基准测试后推广至强关联系统，还对共振驱动下带隙内态的出现给出微观描述并探讨其有限温度对应情形。
AI 中文摘要
周期性驱动量子系统为通过外场调控有效哈密顿量来设计新奇物态提供了有效途径，但多数研究通常采用高频极限近似，未考虑驱动启动瞬态过程中的物理过程。本研究提出一种时间与动量分辨隧穿光谱方案，用于探测超越高频极限的Floquet驱动系统的瞬时能谱，可同时捕捉新奇效应与非绝热现象，无需显式重构含时格林函数。我们在驱动非相互作用费米子模型上对该方法进行基准测试，再借助含时密度矩阵重整化群技术将其推广到强关联系统，还对共振驱动下带隙内态的出现给出微观描述，并简要探讨其有限温度对应情形。
英文摘要
Periodically driven quantum systems provide a powerful route to engineer novel states of matter by controlling their effective Hamiltonians through external fields. However, most treatments are usually simplified by considering the high-frequency limit, and do not account for the processes taking place in the transient regime during the onset of the drive. In this work, we introduce a time and momentum resolved tunneling spectroscopy protocol to probe the instantaneous energy spectrum of Floquet-driven systems beyond the high-frequency regime, capturing both emergent effects and non-adiabatic phenomena without requiring explicit reconstruction of the full time-dependent Green's function. We benchmark the method on driven non-interacting fermionic models, and then generalize the approach to strongly correlated systems with the aid of time-dependent density matrix renormalization group techniques. We also provide a microscopic description to the emergence of in-gap states under resonant driving, and briefly explore its finite temperature analog.
Comments11 pages, 7 figures
