Quantum crystals abound in the whole range of solid-state species. Below a certain
threshold temperature the physical behavior of rare gases (He 4 and Ne), molecular solids …

The achievement of Bose–Einstein condensation in ultra-cold vapours of alkali atoms has
given enormous impulse to the study of dilute atomic gases in condensed quantum states …

We calculate the energy of one-and two-dimensional weakly interacting Bose-Bose mixtures
analytically in the Bogoliubov approximation and by using the diffusion Monte Carlo …

We present a density functional for liquid He 4, properly accounting for the static response
function and the phonon-roton dispersion in the uniform liquid. The functional is used to …

We consider a homogeneous 1D Bose gas with contact interactions and a large attractive
coupling constant. This system can be realized in tight waveguides by exploiting a …

A Monte Carlo algorithm for computing quantum-mechanical expectation values of
coordinate operators in many-body problems is presented. The algorithm, which relies on …

Silicon carbide is a hard, semiconducting material presenting many polytypes, whose
behavior under extreme conditions of pressure and temperature has attracted large interest …

Recent experiments have suggested that, at low enough temperature, the homogeneous
nucleation of bubbles occurs in liquid helium near the calculated spinodal limit. This was …

We compute the zero-temperature dynamical structure factor of one-dimensional liquid He 4
by means of state-of-the-art quantum Monte Carlo and analytic continuation techniques. By …

The application of the diffusion Monte Carlo method to a strongly interacting Fermi system as
normal liquid 3 He is explored. We show that the fixed-node method together with the …