Gutzwiller mean-field theory
WebDec 16, 2009 · The procedure can be seen as a proper quantization of the Gutzwiller mean field theory. The theory is conveniently evaluated in the framework of the quantum effective action, for which the usual symmetry principles are now supplemented with a ``constraint principle'' operative on short distances. We test the theory via investigation … WebMar 6, 2024 · In this paper, we study the two-components extended BH model on a two-dimensional(2D) square lattice. By employing the inhomogeneous dynamical Gutzwiller mean-field theory (DGMFT) , , , we reveal the quantum phases in which the order parameter and occupancy are displayed site by site. With periodic boundary condition, …
Gutzwiller mean-field theory
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WebOur theory is a systematic generalization of the Bogoliubov theory of weakly interacting gases. The control parameter of the theory, defined … WebQuasiparticle states near the surface of d-wave superconductors in a magnetic field are studied based on the t-J model on the 2D square lattice within the Gutzwiller approximation. We perform a calcu
WebWe develop a quantum many-body theory of the Bose-Hubbard model based on the canonical quantization of the action derived from a Gutzwiller mean-field ansatz. Our theory is a systematic generalization of the Bogoliubov theory of weakly interacting gases. The control parameter of the theory, defined as the zero point fluctuations on top of the …
WebJul 25, 2024 · Dynamical mean-field theory of strongly correlated fermion systems and the limit of infinite dimensions journal, January 1996. Georges, Antoine; Kotliar, Gabriel; Krauth, Werner; ... Here, we develop a hybrid quantum-classical simulation framework for correlated electron systems based on the Gutzwiller variational embedding approach. WebMar 31, 2024 · From this representation one can project to single occupancy and evaluate the entanglement spectra after Gutzwiller projection. We then obtain the MPS and iMPS representation of Gutzwiller projected mean-field states that arise from the variational slave-fermion approach to the S = 1 bilinear-biquadratic quantum spin chain.
WebOur theory is a systematic generalization of the Bogoliubov theory of weakly interacting gases. The control parameter of the theory, defined as the zero point fluctuations on top …
WebSep 2, 2013 · One truly legendary model is the Hubbard model, independently conceived by Martin Gutzwiller 1, ... the development of dynamical mean-field theory is a noteworthy … banjir kabupaten bekasi 2010WebDec 1, 1993 · A mean field type theory is developed for the insulating RVB state and high temperature superconductivity in doped La 2 CuO 4 and other high-T c oxides. The T c as a function of the doping parameter δ drops sharply around ∼ δ. The zero temperature gap versus T c relation depends sensitively on the choice of the parameters. Gutzwiller … pixelmarketoWebMar 30, 2015 · In contrast to Gutzwiller mean-field theory and strong-coupling perturbative approaches, nonequilibrium bosonic dynamical mean-field theory captures not only dynamical transitions but also damping and thermalization effects at finite temperature. We apply the formalism to quenches in the Bose-Hubbard model, starting from both the … pixelmatorWebAug 9, 2012 · The Gutzwiller theory reproduces the mean-field result for the phase boundary between the superfluid phase and the Mott phase at zero temperature (D. Jaksch, C. Bruder et al., 1998). The mean-field approach becomes exact in the limit of infinite … banjir jayapura 2022WebMay 29, 2012 · We study in this paper a series of Gutzwiller projected wave functions for S = 1 spin chains obtained from a fermionic mean-field theory for general S > 1 / 2 spin systems [Liu, Zhou, and Ng, Phys. Rev. B 81, 224417 (2010)] applied to the bilinear-biquadratic (J-K) model.The free-fermion mean-field states before the projection are 1D … banjir kalimantan 2021WebJan 7, 2024 · The time-dependent Gutzwiller approximation is rederived on the basis of a variational wave function which is a direct product of a Slater determinant and a coherent … banjir kalimantan 2022WebJul 22, 2024 · Local spectral function A (ω) for different values of J / U, as computed within Gutzwiller mean-field theory (blue line), DMFT with Hubbard-I impurity solver (dashed … pixelmash