4 papers
Computer simulation of quantum melting in hydrogen clusters
Stefano Baroni, Saverio Moroni
We introduce a new criterion--based on multipole dynamical correlations calculated within Reptation Quantum Monte Carlo--to discriminate between a melting vs. freezing behavior in…
Derivatives of the fixed-node energy
S. De Palo, S. Moroni, S. Baroni
We present quantum Monte Carlo calculations of total energy derivatives, consistently performed in the fixed-node approximation. Contributions from nodal displacements, neglected o…
Two-dimensional electron gas: correlation energy versus density and spin polarization
Paola Gori-Giorgi, Claudio Attaccalite, Saverio Moroni +1
We propose a simple analytic representation of the correlation energy for the two-dimensional electron gas, as a function of the density and the spin polarization. This new paramet…
Reptation Quantum Monte Carlo
S. Baroni, S. Moroni
We present an elementary and self-contained account of the analogies existing between classical diffusion and the imaginary-time evolution of quantum systems. These analogies are u…