EXACT DIAGONALIZATION - Avhandlingar.se

Claudio Verdozzi's research profile

Phys. Comm. 183 (2012) 1884 – 1889. Hubbard (1963) J. Hubbard, Electron correlations in narrow energy bands, Proc. R. Soc. Lond.

Hubbard model exact diagonalization

Commun. 225, 128 (2018). Phase transition in a honeycomb lattice is studied by the means of the two-dimensional Hubbard model and the exact diagonalization dynamical mean field theory at zero temperature. At low energies, the dispersion relation is shown to be a linear function of the momentum. In the limit of weak interactions, the system is in the semi-metal phase. Siro and Harju (2012) T. Siro, A. Harju, Exact diagonalization of the Hubbard model on graphics processing units, Comp. Phys.

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‪Piotr Sierant‬ - ‪Google Scholar‬

Exact Diagonalization of the Hubbard Model: Ten-electrons on Ten-sites @article{Kingsley2013ExactDO, title={Exact Diagonalization of the Hubbard Model: Ten-electrons on Ten-sites}, author={Onaiwu N. Kingsley and Okanigbuan O. Robinson}, journal={Research Journal of Applied Sciences, Engineering and Technology}, year={2013}, volume={6}, pages Exact Diagonalization Study of an Extended Hubbard Model 1013 up,butwithratherreducedheight. Onthecontrary,for the case of U=t 1 = 5:0, illustrated in Fig. 1b, only the high-temperaturepeakofspeciﬁcheatissensitivetot 2, whilethelow-temperaturemaximumshowsnotendency toshiftandtheintermediatemaximumappears. Fig.1.

Detecting quantum critical points in the t-t ' Fermi-Hubbard

Phys. Rev. Calculation of collective modes for the Bose-Hubbard model with confinement Enhanced pairing susceptibility in a photo-doped two-orbital Hubbard model. Distributional exact diagonalization formalism for quantum impurity models. impurity solvers (SPTF, Hubbard I approximation, exact diagonalization) [6, 7]; Standard model of the rare earths analyzed from the Hubbard I approximation. av S Baum — and a particular model for Weakly Interacting Massive Particle (WIMP) Dark Matter. made more precise in discussions between A. Drukier, K. Freese, P. Stengel, such that the mass matrix and the kinetic terms are diagonalized simultaneously. [242] R. L. Fleischer, P. B. Price, R. M. Walker and E. L. Hubbard, Phys.

. . . . An exact solution for the Hubbard model in the case of a one-dimensional chain exists, called the Bethe Aug 9, 2019 Wigner transformation, (ii) free particle systems: the Su-Schrieffer-Heeger (SSH) model,.
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Here we explore the changes in carrier effective mass and quasiparticle weight and in one- and two-particle spectral functions that occur in a dynamic Hubbard model upon pairing, by exact diagonalization … We study Mott transition in the two-dimensional Hubbard model on an anisotropic triangular lattice. We use the Lanczos exact diagonalization of finite-size clusters up to eighteen sites, and calculate Drude weight, charge gap, double occupancy and spin structure factor.

, M. Jaščur b. , A. Bobák b. Feb 27, 2019 Exact diagonalization study of the Hubbard-parametrized four-spin ring exchange model on a square lattice.
Systematic biology

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SPIN-DENSITY-APPROXIMATION - Dissertations.se

multi-orbital Hubbard model, Heisenberg model, Kondo lattice model). HΦ also supports the massively parallel computations. The Lanczos algorithm for obtaining the ground state and thermal pure quantum state method for finite-temperature calculations are implemented. 1992-03-01 PHYSICAL REVIEW A 85, 065601 (2012) Exact diagonalization of the one-dimensional Bose-Hubbard model with local three-body interactions Tomasz Sowinski´ Institute of Physics of the Polish Academy of Sciences, Aleja Lotnikow 32/46, 02-668 Warsaw, Poland´ Exact Diagonalization Approach for the infinite D Hubbard Model .