Exact Fermi-edge singularity exponent in a Luttinger liquid

Article

关键词: DIMENSIONAL ELECTRON-GAS;    QUANTUM WIRES;    MODEL;    BACKSCATTERING;    TRANSMISSION;    DYNAMICS;   

DOI  :  10.1103/PhysRevB.56.1153

来源: SCIE

【 摘 要 】

We report the exact calculation of the Fermi-edge singularity exponent for correlated electrons in one dimension (Luttinger liquid). Focusing on the special interaction parameter g = 1/2, the asymptotic long-time behavior can be obtained using the Wiener-Hopf method. The result confirms the previous assumption of an open boundary fixed point. In addition, a dynamic k-channel Kondo impurity is studied via Abelian bosonization for k = 2 and k = 4. It is shown that the corresponding orthogonality exponents are related to the orthogonality exponent in a Luttinger liquid.

【 授权许可】

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