Browsing by Author "Koyira, Daya"

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    One Dimensional Interacting Fermion System By Daya Koyira
    (Addis Ababa University, 2005-06) Koyira, Daya; Bedassa, Tesgera (PhD)
    Some properties of metals at a low - lying excitation is studied analytically based on the theory of Fermi liquid. The breakdown of Landau’s theory of Fermi liquid in one dimension is analyzed. The one dimensional interacting system shows the power law behavior and logarithmic divergence in its correlation function. In contrast, the Fermi liquid shows the pole in its microscopic equation of the Green’s function