The study of open quantum systems–microscopic systems exhibiting quantum coherence
that are coupled to their environment–has become increasingly important in the past years …

We show how a broad class of lattice spin-1/2 models with angular-and distance-dependent
couplings can be realized with cold alkali atoms stored in optical or magnetic trap arrays …

Bound states of two interacting particles moving on a lattice can exhibit remarkable features
that are not captured by the underlying single-particle picture. Inspired by this phenomenon …

We compute exactly the von Neumann entanglement entropy of the eta-pairing states-a
large set of exact excited eigenstates of the Hubbard Hamiltonian. For the singlet eta-pairing …

We propose a novel possibility of dynamically changing the pairing of superconductors from
s wave to η pairing (where the pairs condense at the Brillouin-zone corner momenta) by …

We present a simple, experimentally realizable method to make coherent three-body
interactions dominate the physics of an ultracold lattice gas. Our scheme employs either …

We construct exact eigenstates of multicomponent Hubbard models in arbitrary dimensions
by generalizing the η-pairing mechanism. Our models include the SU (N) Hubbard model as …

Two-component coupled Bose gas in a 1D optical lattice is examined. In addition to the
postulated Mott insulator and superfluid phases, multiple bosonic components manifest spin …

We suggest and analyze a scheme to adiabatically cool bosonic atoms to picokelvin
temperatures which should allow the observation of magnetic ordering via superexchange …

We analyze a scheme for preparation of magnetically ordered states of two-component
bosonic atoms in optical lattices. We compute the dynamics during adiabatic and optimized …