The orbital degree of freedom plays a fundamental role in understanding the unconventional
properties in solid state materials. Experimental progress in quantum atomic gases has …

We calculate the dynamical spin structure factor of the generalized spin-1/2 compass spin
chain using the density matrix renormalization group. The model, also known as the twisted …

We consider a class of one-dimensional compass models with an XYZ-YZX type of three-site
exchange interaction in an external magnetic field. We present the exact solution derived by …

We consider a class of one-dimensional compass models with antisymmetric Dzyaloshinskii-
Moriya exchange interaction in an external magnetic field. Based on the exact solution …

We present an exact solution for a class of one-dimensional compass models which stand
for interacting orbital degrees of freedom in a Mott insulator. By employing the Jordan …

We investigate the phase diagram and the spin-orbital entanglement of a one-dimensional
SU (2)⊗ XXZ model with SU (2) spin exchange and anisotropic XXZ orbital exchange …

To demonstrate the role played by the von Neumann entropy (vNE) spectra in quantum
phase transitions we investigate the one-dimensional anisotropic SU (2) XXZ⊗ spin–orbital …

We analyze the possible types of ordering in a boson-fermion model. The Hamiltonian is
inherently related to the Bose-Hubbard model for vector two-species bosons in optical …

Motivated by the experiment [St-Jean, Nat. Photonics 11, 651 (2017) 1749-4885
10.1038/s41566-017-0006-2] on topological phases with collective photon modes in a …

Two-component dipolar fermions in zigzag optical lattices allow for the engineering of spin-
orbital models. We show that dipolar lattice fermions permit the exploration of a regime …