130 citations · 713 across the 21 of their papers we have counts for
7 papers · 1 filter
Temperature Dependence of the Vacancy Formation Energy in Solid He
Riccardo Rota, Jordi Boronat
We studied the thermal effects on the behavior of incommensurate solid He at low temperatures using the path integral Monte Carlo method. Below a certain temperature, depending…
Momentum distribution of liquid 4He across the normal-superfluid phase transition
G. Ferré, R. Rota, J. Boronat
We have carried out a study of the momentum distribution and of the spectrum of elementary excitations of liquid He across the normal-superfluid transition temperature, using t…
Superfluidity of metastable bulk glass para-hydrogen at low temperature
O. N. Osychenko, R. Rota, J. Boronat
Molecular para-hydrogen has been proposed theoretically as a possible candidate for superfluidity, but the eventual superfluid transition is hindered by its crystallization. In thi…
A microscopic description of vacancies in solid 4He
R. Rota, Y. Lutsyshyn, C. Cazorla +1
The changes that vacancies produce in the properties of hcp solid 4He are studied by means of quantum Monte Carlo methods. Our results show that the introduction of vacancies produ…
High-order Time Expansion Path Integral Ground State
R. Rota, J. Casulleras, F. Mazzanti +1
The feasibility of path integral Monte Carlo ground state calculations with very few beads using a high-order short-time Green's function expansion is discussed. An explicit expres…
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…