Work

An integrable Anderson-impurity problem embedded in the one-dimensional Hubbard model

Year: 2025

Type: article

Abstract: An exactly solvable one-dimensional Hubbard model with a single Anderson impurity embedded at the boundary is constructed in the framework of the quantum inverse scattering method. The model is solved exactly by the nested Bethe ansatz method. We identify the boundary bound states and determine the ground state phase diagram. By analyzing the impurity contributions to the magnetization density and magnetic susceptibility, we demonstrate that a local moment is formed at the impurity site and is screened by the host electrons, consistent with Kondo physics.

Source: Nuclear Physics B

DOI: 10.1016/j.nuclphysb.2025.117208

Authors: Renjie Song, Mingchen Zheng, Junpeng Cao, Yupeng Wang

Institutions: Chinese Academy of Sciences, Institute of Physics, University of Chinese Academy of Sciences, Peng Huanwu Center for Fundamental Theory

Language: English

Topic: Quantum many-body systems

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funders: National Natural Science Foundation of China, Key Technologies Research and Development Program, National Key Research and Development Program of China