20 citations · 90 across the 11 of their papers we have counts for
11 papers
The N-shaped partition method: A novel parallel implementation of the Crank Nicolson algorithm
Yaroslav Lutsyshyn, Francisco Navarrete, Dieter Bauer
We develop an algorithm to solve tridiagonal systems of linear equations, which appear in implicit finite-difference schemes of partial differential equations (PDEs), being the tim…
Weakly parametrized Jastrow ansatz for a strongly correlated Bose system
Yaroslav Lutsyshyn
We consider the Jastrow pair-product wavefunction for the strongly correlated Bose systems, in our case liquid helium-4. An ansatz is proposed for the pair factors which consists o…
SAIL: A CUDA-based implementation of the simulated annealing for the inverse Laplace transform problem
Yaroslav Lutsyshyn, Grigori E. Astrakharchik
We developed a CUDA-based parallelization of the annealing method for the inverse Laplace transform problem. The algorithm is based on annealing algorithm and minimizes residue of…
A coordinated wavefunction for the ground state of liquid helium-4
Y. Lutsyshyn
We present a variational ansatz for the ground state of a strongly correlated Bose system. This ansatz goes beyond the Jastrow-Feenberg functional form and explicitly enforces coor…
Quantum Phase Transition with a Simple Variational Ansatz
Y. Lutsyshyn, G. E. Astrakharchik, C. Cazorla +1
We study the zero-temperature quantum phase transition between liquid and hcp solid helium-4. We use the variational method with a simple yet exchange-symmetric and fully explicit…
Fast quantum Monte Carlo on a GPU
Y. Lutsyshyn
We present a scheme for the parallelization of quantum Monte Carlo on graphical processing units, focusing on bosonic systems and variational Monte Carlo. We use asynchronous execu…
Elastic Constants of Incommensurate Solid 4He
Claudio Cazorla, Yaroslav Lutsyshyn, Jordi Boronat
We study the elastic properties of incommensurate solid 4He in the limit of zero temperature. Specifically, we calculate the pressure dependence of the five elastic constants (C11,…
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…
The elastic constants of solid 4He under pressure: a diffusion Monte Carlo study
C. Cazorla, Y. Lutsyshyn, J. Boronat
We study the elasticity of perfect 4He at zero-temperature using the diffusion Monte Carlo method and a realistic semi-empirical pairwise potential to describe the He-He interactio…
Phase diagram of Rydberg atoms with repulsive van der Waals interaction
O. N. Osychenko, G. E. Astrakharchik, Y. Lutsyshyn +2
We report a quantum Monte Carlo calculation of the phase diagram of bosons interacting with a repulsive inverse sixth power pair potential, a model for assemblies of Rydberg atoms…
Properties of Vacancy Formation in He-4 hcp Crystals at Zero Temperature and Fixed Pressure
Y. Lutsyshyn, C. Cazorla, G. E. Astrakharchik +1
Equation of state of He-4 hcp crystals with vacancies is determined at zero temperature using the diffusion Monte Carlo technique, an exact ground state zero-temperature method. Th…