Fermi-edge singularities and backscattering in a weakly interacting one-dimensional electron gas
نویسندگان
چکیده
منابع مشابه
Fermi Edge Singularities and Backscattering in a Weakly Interacting 1D Electron Gas
The photon-absorption edge in a weakly interacting one-dimensional electron gas is studied, treating backscattering of conduction electrons from the core hole exactly. Close to threshold, there is a power-law singularity in the absorption, I(ǫ) ∝ ǫ−α, with α = 3/8 + δ+/π − δ2 +/2π where δ+ is the forward scattering phase shift of the core hole. In contrast to previous theories, α is finite (and...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 1994
ISSN: 0163-1829,1095-3795
DOI: 10.1103/physrevb.49.2253