The stability of the lD Luttinger hquid phase of interacting spinless particles (t V mortel) to an on-site diagonal disorder is studied by exact diagonalization of small ID

The ground state and the excitation spectrum of strongly correlated electrons in quantum dots are investigated. An analytical solution is constructed by exact diagonalization of the Hamiltonian in terms of the N-particle eigenmodes.

in this paper, we study the electronic properties of a concentric triple quantum ring using exact diagonalization technique. the energy spectra and magnetization for a single electron and two electrons, in the presence of an applied magnetic field, are calculated and discussed. it is shown that, for two-interacting electrons, the period of aharonov-bohm oscillations decreases to the half of tha...

We apply the rotation-invariant Green’s function method (RGM) to study spin $$S=1/2$$ Heisenberg model on a one-dimensional sawtooth lattice, which has two nonequivalent sites in unit cell. check RGM predictions for observable quantities by comparison with exact-diagonalization and finite-temperature-Lanczos calculations. discuss thermodynamic dynamic properties of this relation mineral atacami...