论文标题
照片诱导的$η$ - 一维莫特绝缘子
Photoinduced $η$-pairing in One-dimensional Mott Insulators
论文作者
论文摘要
我们在基质产物状态表示中采用密度 - 矩阵重质化组技术，我们研究了由$η$ pairing机构在半填充的哈伯德链中引起的光激发超导相关性。我们通过与小型系统的精确二进制数据进行比较来估计特征对相关函数，并验证数值结果的准确性。在强耦合方案中计算出最大增强$η$接头相关性的泵的最佳参数集。对于这样的泵，我们探讨了准距离顺序的可能性。
Employing the density-matrix renormalization group technique in the matrix-product-state representation, we investigate the photoexcited superconducting correlations induced by the $η$-pairing mechanism in the half-filled Hubbard chain. We estimate the characteristic pair correlation function and verify the accuracy of our numerical results by comparison with exact-diagonalization data for small systems. The optimal parameter set of the pump that most enhances the $η$-pair correlations, is calculated in the strong-coupling regime. For such a pump, we explore the possibility of quasi-long-range order.
