70 citations · 173 across the 5 of their papers we have counts for
8 papers
Delayed Rejection Variational Monte Carlo
Dario Bressanini, Gabriele Morosi, Silvia Tarasco +1
A new acceleration algorithm to address the problem of multiple time scales in variational Monte Carlo simulations is presented. After a first attempted move has been rejected, the…
Ground state and excitation dynamics in Ag doped helium clusters
Massimo Mella, Maria Carola Colombo, Gabriele Morosi
We present a quantum Monte Carlo study of the structure and energetics of silver doped helium clusters AgHe for up to 100. Our simulations show the first solvation shell of…
o-Positronium scattering off H and He
Simone Chiesa, Massimo Mella, Gabriele Morosi
Exploiting an approach similar to the R-matrix theory, the diffusion Monte Carlo method is employed to compute phase shifts and threshold cross sections for the elastic scattering…
Annihilation rate in positronic systems by quantum Monte Carlo. eLiH as test case
Massimo Mella, Simone Chiesa, Gabriele Morosi
An accurate method to compute the annihilation rate in positronic systems by means of quantum Monte Carlo simulations is tested and compared with previously proposed methods using…
Robust wave function optimization procedures in quantum Monte Carlo methods
Dario Bressanini, Gabriele Morosi, Massimo Mella
The energy variance optimization algorithm over a fixed ensemble of configurations in variational Monte Carlo is formally identical to a problem of fitting data: we reexamine it fr…
Explicitly correlated trial wave functions in Quantum Monte Carlo calculations of excited states of Be and Be-
Luca Bertini, Dario Bressanini, Massimo Mella +1
We present a new form of explicitly correlated wave function whose parameters are mainly linear, to circumvent the problem of the optimization of a large number of non-linear param…