论文标题
耗散对开放量子系统中通用波动动力学的影响
Impact of Dissipation on Universal Fluctuation Dynamics in Open Quantum Systems
论文作者
论文摘要
由于外部耗散，最近的实验和理论工作已经发现了非平凡的量子动力学。使用精确的数值方法和基于重新归一致的分析技术，我们从理论上阐明了耗散量会大大改变与非相互作用的费米子和玻色子中与表面劳性生长相关的通用粒子噪声 - 裂开动力学。在导致空间连贯性丧失的系统下的系统中，我们发现表面劳动动力学的普遍性类别从弹道类变为一类，而Edwards-Wilkinson缩放指数和非常规的缩放函数。另一方面，在耗散的系统中，粒子的内部和掉落粒子损坏了粒子的保护，丢失了通用动力学。
Recent experimental and theoretical works have uncovered nontrivial quantum dynamics due to external dissipation. Using an exact numerical method and a renormalization-group-based analytical technique, we theoretically elucidate that dissipation drastically alters universal particle-number-fluctuation dynamics related to surface-roughness growth in non-interacting fermions and bosons. In a system under dephasing that causes loss of spatial coherence, we find that a universality class of surface-roughness dynamics changes from the ballistic class to a class with the Edwards-Wilkinson scaling exponents and an unconventional scaling function. On the other hand, in a system under dissipation with in- and out-flow of particles that breaks particle-number conservation, the universal dynamics is lost.
