160 citations · 253 across the 8 of their papers we have counts for
8 papers
Single-particle properties of the Hubbard model in a novel three-pole approximation
Andrea Di Ciolo, Adolfo Avella
We study the 2D Hubbard model using the Composite Operator Method within a novel three-pole approximation. Motivated by the long-standing experimental puzzle of the single-particle…
Quantum gap and spin-wave excitations in the Kitaev model on a triangular lattice
Adolfo Avella, Andrea Di Ciolo, George Jackeli
We study the effects of quantum fluctuations on the dynamical generation of a gap and on the evolution of the spin-wave spectra of a frustrated magnet on a triangular lattice with…
Spiral antiferromagnets beyond the spin-wave approximation: frustrated and Heisenberg models in the honeycomb lattice
Andrea Di Ciolo, Juan Carrasquilla, Federico Becca +2
We examine the stability of classical states with a generic incommensurate spiral order against quantum fluctuations. Specifically, we focus on the frustrated spin-1/2 and Hei…
Nature of the phases in the frustrated XY model on the honeycomb lattice
Juan Carrasquilla, Andrea Di Ciolo, Federico Becca +2
We study the phase diagram of the frustrated XY model on the honeycomb lattice by using accurate correlated wave functions and variational Monte Carlo simulations. Our results sugg…
Exotic quantum spin models in spin-orbit-coupled Mott insulators
Juraj Radic, Andrea Di Ciolo, Kai Sun +1
We study cold atoms in an optical lattice with synthetic spin-orbit coupling in the Mott-insulator regime. We calculate the parameters of the corresponding tight-binding model usin…
Tunnelling matrix elements with antiferromagnetic Gutzwiller wave functions
Andrea Di Ciolo, Luca F. Tocchio, Claudius Gros
We use a generalized Gutzwiller Approximation (GA) elaborated to evaluate matrix elements with partially projected wave functions and formerly applied to homogeneous systems. In th…