Dynamical scaling of correlations generated by short- and long-range dissipation
Dynamical scaling of correlations generated by short- and long-range dissipation
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短程和长程耗散产生的相关性的动态缩放
DOI：
10.1103/physrevb.105.184305
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发表时间：
2021-10
影响因子：
3.7
通讯作者：
K. Seetharam;Alessio Lerose;R. Fazio;J. Marino
中科院分区：
文献类型：
--
作者：
K. Seetharam;Alessio Lerose;R. Fazio;J. Marino
我们研究的时空传播的相关性在合奏的自旋由于耗散的特点是由短期和长期的空间配置文件。我们认为系统最初在一个不相关的状态，并发现相关性扩大和合同的一种新的模式密切相关的耗散性质的动力学通道和它的空间分布。此外，我们通过将非平衡自旋波理论推广到耗散系统的情况下，并推导出任何非平衡不变的自旋链的运动方程，其动力学可以由Hamilton相互作用和耗散Lindblad通道的组合来描述，从而做出了方法上的贡献。我们的工作旨在将关联动力学的研究扩展到纯耗散的量子模拟器，并将它们与哈密顿系统中传播的关联范式进行比较。
We study the spatio-temporal spreading of correlations in an ensemble of spins due to dissipation characterized by short- and long-range spatial profiles. We consider systems initially in an uncorrelated state, and find that correlations widen and contract in a novel pattern intimately related to both the dissipative nature of the dynamical channel and its spatial profile. Additionally, we make a methodological contribution by generalizing non-equilibrium spin-wave theory to the case of dissipative systems and derive equations of motion for any translationally invariant spin chain whose dynamics can be described by a combination of Hamiltonian interactions and dissipative Lindblad channels. Our work aims at extending the study of correlation dynamics to purely dissipative quantum simulators and compare them with the established paradigm of correlations spreading in hamiltonian systems.