The density matrix renormalization group (DMRG) is one of the most powerful numerical
methods for studying two-dimensional quantum lattice systems, despite a perception that it is …

The angle-resolved photoemission (ARPES) technique has been developed rapidly over the
last decade, accompanied by the improvement of energy and momentum resolutions. This …

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

We study the interplay between stripes and d-wave superconductivity in the two-dimensional
t− t′− J model using a variational Monte Carlo method. The next-nearest-neighbor hopping …

Google's tensor processing units (TPUs) are integrated circuits specifically built to accelerate
and scale up machine learning workloads. They can perform fast distributed matrix …

As the number of legs n of an n-leg, t− J ladder increases, density-matrix renormalization
group calculations have shown that the doped state tends to be characterized by a static …

We make a critical analysis of numerical results for and against phase separation and stripe
formation in the t− J model. We argue that the frustrated phase separation mechanism for …

The authors discuss concepts used by them and others for studying high temperature
superconductivity. These shed some light on basic questions. Suggestions are presented …

The main properties of realistic models for manganites are studied using analytic mean-field
approximations and computational numerical methods, focusing on the two-orbital model …

Motivated by the growing evidence of the importance of charge fluctuations in the
pseudogap phase in high-temperature cuprate superconductors, we apply a large-N …