896 research outputs found

    A Precis on How Democracies Die as a Consequence of America’s, Failure of Government Working for the People while Serving the Interests of the Wealthy

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    This precis speaks to the failure of the United States government to sustain the wealth of the middle-class after the post-World War Two years’, while serving the wealthiest Americans. It will document how the country has become polarized and fractured along ideological and cultural lines. This situation has created a segmentation of the country that has competing visions, purpose and meaning which is tearing it apart.It will also focus on the inequality in the country that has emerged from the Oligarchy’s domination of the political and free market space-government of the 1%, by the 1% AND FOR THE 1%. Their mantra is to keep the government out of business and have business in the government

    Weakly correlated electrons on a square lattice: a renormalization group theory

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    We study the weakly interacting Hubbard model on the square lattice using a one-loop renormalization group approach. The transition temperature T_c between the metallic and (nearly) ordered states is found. In the parquet regime, (T_c >> |mu|), the dominant correlations at temperatures below T_c are antiferromagnetic while in the BCS regime (T_c << |mu|) at T_c the d-wave singlet pairing susceptibility is most divergent.Comment: 12 pages, REVTEX, 3 figures included, submitted to Phys. Rev. Let

    Linguistics

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    Contains reports on three research projects.U. S. Air Force Electronics Systems Division) under Contract AF 19(628)-2487Joint Services Electronics Programs (U. S. Army, U. S. Navy, and U. S. Air Force) under Contract DA 36-039-AMC-03200(E)National Science Foundation (Grant GP-2495)National Institutes of Health (Grant MH-04737-05)National Aeronautics and Space Administration (Grant NsG-496

    Robustness of a local Fermi Liquid against Ferromagnetism and Phase Separation

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    We study the properties of Fermi Liquids with the microscopic constraint of a local self-energy. In this case the forward scattering sum-rule imposes strong limitations on the Fermi-Liquid parameters, which rule out any Pomeranchek instabilities. For both attractive and repulsive interactions, ferromagnetism and phase separation are suppressed. Superconductivity is possible in an s-wave channel only. We also study the approach to the metal-insulator transition, and find a Wilson ratio approaching 2. This ratio and other properties of Sr_{1-x}La_xTiO_3 are all consistent with the local Fermi Liquid scenario.Comment: 4 pages (twocolumn format), can compile with or without epsf.sty latex style file -- Postscript files: fig1.ps and fig2.p

    Dynamic Exponent of t-J and t-J-W Model

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    Drude weight of optical conductivity is calculated at zero temperature by exact diagonalization for the two-dimensional t-J model with the two-particle term, WW. For the ordinary t-J model with WW=0, the scaling of the Drude weight Dδ2D \propto \delta^2 for small doping concentration δ\delta is obtained, which indicates anomalous dynamic exponent zz=4 of the Mott transition. When WW is switched on, the dynamic exponent recovers its conventional value zz=2. This corresponds to an incoherent-to-coherent transition associated with the switching of the two-particle transfer.Comment: LaTeX, JPSJ-style, 4 pages, 5 eps files, to appear in J. Phys. Soc. Jpn. vol.67, No.6 (1998
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