Gutzwiller wave function
نویسندگان
چکیده
منابع مشابه
Gutzwiller wave function under magnetic field
Magnetization process of the Gutzwiller wave function is studied accurately by a variational Monte Carlo method. We apply it to the one-dimensional (1D) and 2D Hubbard models (HM), and to the 1D periodic Anderson model (PAM) without orbital degeneracy. For the HM, magnetization varies discontinuously to the full moment, as the magnetic field increases. For the PAM, the paramagnetic state is uns...
متن کاملModular matrices from universal wave-function overlaps in Gutzwiller-projected parton wave functions
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متن کاملExact analytic results for the Gutzwiller wave function with finite magnetization
We present analytic results for ground-state properties of Hubbard-type models in terms of the Gutzwiller variational wave function with nonzero values of the magnetization m. In dimension D51 approximation-free evaluations are made possible by appropriate canonical transformations and an analysis of umklapp processes. We calculate the double occupation and the momentum distribution, as well as...
متن کاملGutzwiller wave function in the three-band Hubbard model: A variational Monte Carlo study.
The Gutzwiller wave function for the three-band Hubbard model on a two dimensional CuO2 plane is studied by using the variational Monte Carlo (VMC) method in the limit Ud → ∞, where Ud is the Coulomb repulsion between holes on a Cu site. The VMC results for the energy and the fraction of d-holes are compared with those of the Rice-Ueda type Gutzwiller approximation (GA). The difference between ...
متن کاملGutzwiller-Jastrow wave functions for the 1/r Hubbard model.
In this work, we study the wavefunctions of the one dimensional 1/r Hubbard model in the strong interaction limit U = ∞. A set of Gutzwiller-Jastorw wavefunctions are shown to be eigen-functions of the Hamiltonian. The entire excitation spectrum and the thermodynamics are also studied in terms of more generalized Jastrow wavefunctions. For the wavefunctions and integrability conditions at finit...
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ژورنال
عنوان ژورنال: Scholarpedia
سال: 2009
ISSN: 1941-6016
DOI: 10.4249/scholarpedia.7288