Many-body vertex corrections in a one-dimensional electron system interacting with a long-range Coulomb potential

Article

关键词: RANDOM-PHASE-APPROXIMATION;    QUASI-PARTICLE PROPERTIES;    GROUND-STATE PROPERTIES;    QUANTUM WIRES;    DIELECTRIC RESPONSE;    SEMICONDUCTOR;    MODEL;    GAS;    GW;    EXCITATIONS;   

DOI  :  10.1103/PhysRevB.62.1787

来源: SCIE

【 摘 要 】

We study the quasiparticle properties of a one-dimensional electron gas interacting with a long-range electron-electron interaction. The electron self-energy is calculated using the leading-order dynamical-screening approximation with (GWT approximation) and without the vertex corrections (GW approximation). The calculated one-electron properties such as the spectral function, damping rate, and also the momentum distribution indicate the significance of vertex corrections at low densities.

【 授权许可】

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