论文标题
Plaquette Hubbard模型中的光诱导的超导性增强
Photoinduced enhancement of superconductivity in the plaquette Hubbard model
论文作者
论文摘要
实时动力学技术已被证明在理论上和实验上都越来越有用，在理解密切相关的系统方面越来越有用。通过采用公正的时间分辨的精确对角线化，我们在二维Plaquette Hubbard模型中研究了泵动力学，其中独特的跳跃积分$ t_h $和$ t_h^\ prime $存在于plaquettes之间和之间。在中间耦合方案中，观察到了$ d $ - 波超导的显着增强，并将其与通过简单检查期望值与汉密尔顿特征状态的预期值获得的相比。我们的工作提供了对Hubbard模型中超导性的进一步了解，将配对振幅的描述扩展到了频率 - 肛门拷贝平面，并为实验性工程的出现在实验性工程中提供了有希望的方法。
Real-time dynamics techniques have proven increasingly useful in understanding strongly correlated systems both theoretically and experimentally. By employing unbiased time-resolved exact diagonalization, we study pump dynamics in the two-dimensional plaquette Hubbard model, where distinct hopping integrals $t_h$ and $t_h^\prime$ are present within and between plaquettes. In the intermediate coupling regime, a significant enhancement of $d$-wave superconductivity is observed and compared with that obtained by simple examination of expectation values with the eigenstates of the Hamiltonian. Our work provides further understanding of superconductivity in the Hubbard model, extends the description of the pairing amplitude to the frequency-anisotropy plane, and offers a promising approach for experimentally engineering emergent out-of-equilibrium states.
