Outer automorphisms of symmetries (" symmetries of symmetries") in relativistic quantum
field theories are studied, including charge conjugation (C), space-reflection (P), and time …

Cold atoms bring new opportunities to study quantum magnetism, and in particular, to
simulate quantum magnets with symmetry greater than SU (2). Here we explore the …

Motivated by the recent experimental and theoretical progress of the magnetic properties in
iron-based superconductors, we provide a comprehensive analysis of the extended spin-1 …

We show that an interplay between quantum effects, strong on-site ferromagnetic exchange
interaction, and antiferromagnetic correlations in Kondo lattices can give rise to an exotic …

We study the quantum phase diagram of a system of hard-core bosons on the kagome
lattice with nearest-neighbor repulsive interactions, for arbitrary densities, by means of the …

We challenge the hypothesis that the ground states of a physical system whose degeneracy
depends on topology must necessarily realize topological quantum order and display …

We analyze in detail the properties of the one-dimensional Anyon-Hubbard model, which
can be mapped to a corresponding Bose-Hubbard model with a density-dependent Peierls …

We show that an interplay between quantum effects, strong on-site ferromagnetic exchange
interaction and antiferromagnetic correlations in Kondo lattices can give rise to an exotic …

Sistemas unidimensionais desordenados destacam-se por apresentar fenômenos sem
análogos nos casos sem desordem ou em dimensões maiores. Fenômenos inerentes a …