Browsing by Keywords "Hubbard model"
Now showing items 1-4 of 4
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Effect of disorder on the interacting fermi gases in a one-dimensional optical lattice
(World Scientific Publishing Co., 2008)Interacting two-component Fermi gases loaded in a one-dimensional (1D) lattice and subjected to a harmonic trapping potential exhibit interesting compound phases in which fluid regions coexist with local Mott-insulator ... -
Existence of a metallic phase in a 1D Holstein-Hubbard model at half filling
(Elsevier B.V., 2007)The one-dimensional half-filled Holstein-Hubbard model is studied using a series of canonical transformations including phonon coherence effect that partly depends on the electron density and is partly independent and also ... -
Mean-field renormalization group theory of the t-J model
(Bilkent University, 2002)The quantum nature of the high temperature superconductivity models makes analytical approaches to these systems almost impossible to implement. In this thesis, a computational study of the one and two dimensional t − J ... -
Superfluid weight and polarization amplitude in the one-dimensional bosonic Hubbard model
(American Physical Society, 2019)We calculate the superfluid weight and the polarization amplitude for the one-dimensional bosonic Hubbard model with focus on the strong-coupling regime via variational, exact diagonalization, and strong coupling calculations. ...
