The Hubbard model is used to calculate static properties of normal-liquid He 3 at T= 0. For
this, Gutzwiller's variational approach to that model is employed. The work is based on an …

In materials with strong local Coulomb interactions, simple defects such as atomic
substitutions strongly affect both macroscopic and local properties of the system. A …

Electron Correlations in Molecules and Solids bridges the gap between quantum chemistry
and solid-state theory. In the first half of the text new concepts are developed for treating …

Abstract The S= 1/2 Heisenberg Hamiltonian H= 1/2 J n= 1 N− 1 J m= 1 NJ n σ m⋅ σ m+ n,
with J n= J 0/sin 2 (nπ/N), is shown to have a simple singlet ground state in the form of a …

We describe a unitary transformation which eliminates terms coupling states with differing
numbers of doubly occupied sites from the Hamiltonian of the Hubbard model. The S matrix …

A theoretical review is given on high temperature superconductivity in copper oxides
(cuprates) by focusing on the hole do** cases based on the view that it is realized in …

A variational Monte—Carlo method, which is a combination of the variational theory and the
Monte-Carlo technique is proposed to study the Hubbard model with the Gutzwiller's wave …

Transcorrelated methods provide an efficient way of partially transferring the description of
electronic correlations from the ground-state wave function directly into the underlying …

Providing an up-to-date and lucid presentation of phenomena across modern advanced-
level solid state physics, this new edition builds on an elementary understanding to …

A Monte Carlo method is used to calculate various properties of one-band Gutzwiller wave
functions which are formed by restricting the charge fluctuations in noninteracting wave …