Resonance in the Fermi-edge singularity of one-dimensional systems

Article

关键词: KONDO PROBLEM;    LUTTINGER LIQUID;    ELECTRON-GAS;    COULOMB GAS;    MODEL;    PARTICLE;    DYNAMICS;   

DOI  :  10.1103/PhysRevB.53.10928

来源: SCIE

【 摘 要 】

The problem of the Fermi-edge singularity in a one-dimensional Tomonaga-Luttinger liquid is reconsidered. The backward scattering of the conduction band electrons on the impuritylike hole in the valence band is analyzed by mapping the problem onto a Coulomb gas theory. For the case when the electron-electron interaction is repulsive, the obtained exponent of the one-dimensional Fermi-edge singularity appears to be different from the exponent found in previous studies. It is shown that the infrared physics of the Fermi-edge singularity in the presence of backward scattering and electron-electron repulsion resembles the physics of the Kondo problem.

【 授权许可】

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