The physics of one-dimensional interacting bosonic systems is reviewed. Beginning with
results from exactly solvable models and computational approaches, the concept of bosonic …

Full article: Matrix product states, projected entangled pair states, and variational
renormalization group methods for quantum spin systems Skip to Main Content Taylor and …

Spontaneous symmetry breaking underlies much of our classification of phases of matter
and their associated transitions,–. The nature of the underlying symmetry being broken …

We show that even in d=∞ dimensions the Hubbard model, when scaled properly,
describes nontrivial correlations among fermions. Diagrammatic treatments are found to be …

Presenting the physics of the most challenging problems in condensed matter using the
conceptual framework of quantum field theory, this book is of great interest to physicists in …

The author presents a tutorial review of some ideas that are basic to our current
understanding of the phenomenon of Bose-Einstein condensation (BEC) in the dilute atomic …

The mathematical study of the Bose gas goes back to the? rst quarter of the twentieth
century, with the invention of quantum mechanics. The name refers to the Indian physicist …

A modified spin-wave theory for the Heisenberg antiferromagnet (scrH= J) is formulated
under the assumption of zero sublattice magnetization in the same way with the Heisenberg …

We have studied the system of hard-core bosons on a two-dimensional optical lattice using
a variational algorithm based on projected entangled-pair states. We have investigated the …

We develop a perturbation expansion in the intersite hopping around the atomic limit of the
Hubbard model. It is valid for arbitrary finite temperatures and interaction strengths …