We present an up-to-date survey of theoretical concepts and results in the field of one-
dimensional magnetism and of their relevance to experiments and real materials. Main …

Consequences of explicit symmetry breaking in a physically motivated model of SU (N)
antiferromagnet in spatial dimensions one and two are studied. It is shown that the case N …

We study, both numerically and variationally, the interplay between different types of
elementary excitations in the model of a spin chain with anisotropic spin-orbit coupling, in …

The excitation spectrum of the one-dimensional spin-orbital model in a magnetic field is
studied, using a recently developed dynamical density-matrix renormalization-group …

In this paper, we study the magnetic properties of the one-dimensional SU (4) spin-orbital
model by solving its Bethe-ansatz solution numerically. It is found that the magnetic …

We derive an analytic expression for the zero temperature Fourier transform of the density–
density correlation function of a multicomponent Luttinger liquid with different velocities. By …

The present paper studies the symmetries of the Hubbard model of electrons with generally
n-fold orbital degeneracy. It is shown that SU d (2n) and SU c (2n) symmetries hold …

The ground-state phases of a one-dimensional SU (4) spin-orbital Hamiltonian in a
generalized external field are studied on the basis of the Bethe-ansatz solution. Introducing …

Cette thèse est consacrée à l'étude de la dégénérescence orbitale dans les systèmes
d'électrons fortement corrélés à une dimension. Nous définissons un modèle simplifié, le …

Le modèle de Hubbard SU(4) à une dimension : une approche de la dégénérescence
orbitale - Archive ouverte HAL Accéder directement au contenu Documentation FR Français …