Ferran Mazzanti

TL;DR: In this article, the authors used a model based on the Gross-Pitaevskii equation and quantum Monte-Carlo simulations combined with experimental results to show that quantum correlations in dipolar quantum droplets are not negligible and play a role in the onset of an observable shift in the critical atom number of the self-bound state.

TL;DR: By adding a repulsive two-body potential, this work finds a narrow window of interaction parameters leading to stable ground-state configurations of droplets in a crystalline arrangement without resorting to additional stabilizing mechanisms or specific three-body forces.

TL;DR: In this article, a variational hypernetted-chain Euler-Lagrange method was used to study liquid Bose mixtures with uniform density and showed that these mixtures are stable only in a narrow range near an optimal ratio near the total energy minimum.

TL;DR: This work calculates the dynamic structure function in the gas phase which shows the anisotropic dispersion of the excitations and finds that the energy of roton excitations in the strongly interacting direction decreases with increasing polarization angle and almost vanishes close to the instability.

TL;DR: In this paper, the Bose gas with contact interaction in optical lattices at zero temperature is investigated by means of the exact diffusion Monte Carlo algorithm, and the results obtained from the fundamental continuous model are compared with those obtained from lattice (discrete) Bose-Hubbard model, using exact diagonalization, and from the quantum sine-Gordon model.