Simulations of the dynamics of quantum impurity problems with matrix product states
Research output: Contribution to journal › Journal article › Research › peer-review
The Anderson impurity model is a paradigmatic example in the study of strongly correlated quantum systems and describes an interacting quantum dot coupled to electronic leads. Here we investigate its dynamics following a quantum quench based on matrix product state simulations. We examine the behavior of its impurity magnetization. Its relaxation allows us to extract the predicted scaling of the Kondo temperature as a function of the impurity-lead hybridization and quantum dot repulsion. Additionally, our simulations provide estimates of the currents in the nonequilibrium quasisteady state appearing after the quench. Through their values, we examine the dependence of the conductance on the voltage bias Vb and on the impurity chemical potential Vg, which displays a zero-bias Kondo peak. Our results are relevant for transport measurements in Coulomb blockaded devices, and, in particular, in quantum dots induced in nanowires.
Original language | English |
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Article number | 115101 |
Journal | Physical Review B |
Volume | 109 |
Issue number | 11 |
Number of pages | 9 |
ISSN | 2469-9950 |
DOIs | |
Publication status | Published - 1 Mar 2024 |
Bibliographical note
Publisher Copyright:
© 2024 American Physical Society.
Links
- https://arxiv.org/pdf/2304.13756
Submitted manuscript
ID: 389904731