论文标题
开放的两波段系统对携带动量的单模量化场的响应
Response of open two-band systems to a momentum-carrying single-mode quantized field
论文作者
论文摘要
作为一种新的量子状态，拓扑绝缘子已成为凝结物质和材料科学的重点。拓扑绝缘子的开放系统研究引起了许多研究人员的兴趣。最近，许多方面，尤其是实验方面，已经迅速开发出来，例如预测和发现新材料的拓扑特性的许多新型量子效应以及应用，但是理论研究略有困难。在本文中，我们研究了由携带动量的单模场驱动的拓扑绝缘体的响应。在添加具有可调光子动量的单个模式光场之后，我们解决了系统的基态。具体而言，我们表明，从霍尔电导的分析解决方案与封闭系统相比，还有一个额外的校正项，并且不再以Chern数字或Chern数的加权总和来表示Hall电导。此外，通过不同实例的结果及其说明进行了分析和讨论拓扑特性。例如，拓扑阶段的相变点对环境是鲁棒的，并且该系统仍然具有拓扑相变。预计它将通过实验实现或控制，我们的观察结果可能有助于其在凝结物理学和量子统计物理学中的应用和扩展。
As a new quantum state, topological insulators have become the focus of condensed matter and material science. The open system research of topological insulators has aroused the interest of many researchers. Recently, many aspects, especially experimental aspects, have been developed rapidly, such as prediction and discovery of many novel quantum effects and applications of topological properties of new materials, but the theoretical research is slightly tough. In this paper, we study the response of topological insulator driven by momentum-carrying single-mode field. We solve the ground state of the system after the addition of a single mode light field with adjustable photon momentum. Specifically, We show that from the analytical solution of hall conductance compared with the closed system, there is an extra correction term, and hall conductance can no longer be expressed in terms of the chern number or the weighted sum of the chern number. Furthermore, the topological properties are analyzed and discussed through the results of different instance with their illustration. Such as, the phase transition point of topological phase is robust to the environment, and the system still has topological phase transition. It is expected to be realized or controlled by experiments, and our observations may contribute to its application and extension in condensed matter physics and quantum statistical physics.
