117 citations · 216 across the 10 of their papers we have counts for
10 papers
Tuning Interatomic Forces with Magnetic Fields: Feshbach Resonances in Lithium-6
Ettore Vitali, Gino Gamboni
Feshbach resonances, first studied in the context of nuclear reactions, have since become a cornerstone of modern atomic physics. They offer a remarkable degree of control over int…
Spectrum of density, spin and pairing fluctuations of an attractive two-dimensional Fermi gas
Christian Apostoli, Patrick Kelly, Annette Lopez +4
We leverage random phase approximation and unbiased auxiliary-field quantum Monte Carlo methods to compute dynamical correlations for a dilute homogeneous two-dimensional attractiv…
Imaginary Time Correlations for a High-Density two-dimensional Electron Gas
M. Motta, D. E. Galli, S. Moroni +1
We evaluate imaginary time density-density correlation functions for a two-dimensional homogeneous electron gas using the phaseless auxiliary field quantum Monte Carlo method. We s…
Imaginary Time Correlations and the phaseless Auxiliary Field Quantum Monte Carlo
M. Motta, D. E. Galli, S. Moroni +1
The phaseless Auxiliary Field Quantum Monte Carlo method provides a well established approximation scheme for accurate calculations of ground state energies of many-fermions system…
Excitation spectrum in two-dimensional superfluid 4He
F. Arrigoni, E. Vitali, D. E. Galli +1
In this work we perform an ab-initio study of an ideal two-dimensional sample of 4He atoms, a model for 4He films adsorbed on several kinds of substrates. Starting from a realistic…
Dynamic structure factor for 3He in two-dimensions
M. Nava, D. E. Galli, S. Moroni +1
Recent neutron scattering experiments on 3He films have observed a zero-sound mode, its dispersion relation and its merging with -and possibly emerging from- the particle-hole cont…
Equation of state of two--dimensional He at zero temperature
M. Nava, E. Vitali, A. Motta +2
We have performed a Quantum Monte Carlo study of a two-dimensional bulk sample of interacting 1/2-spin structureless fermions, a model of He adsorbed on a variety of preplated…
Quantum dislocations: the fate of multiple vacancies in two dimensional solid 4He
M. Rossi, E. Vitali, D. E. Galli +1
Defects are believed to play a fundamental role in the supersolid state of 4He. We have studied solid 4He in two dimensions (2D) as function of the number of vacancies n_v, up to 3…
Ab-initio low-energy dynamics of superfluid and solid 4He
E. Vitali, M. Rossi, L. Reatto +1
We have extracted information about real time dynamics of 4He systems from noisy imaginary time correlation functions f(tau) computed via Quantum Monte Carlo (QMC): production and…
Microscopic studies of solid 4He with Path Integral Projector Monte Carlo
M. Rossi, R. Rota, E. Vitali +2
We have investigated the ground state properties of solid He with the Shadow Path Integral Ground State method. This exact T=0 K projector method allows to describes quantum so…