28 citations · 81 across the 5 of their papers we have counts for
5 papers
Monte Carlo study of quantum phase transitions at zero temperature
Oleg N. Osychenko
In this Ph.D. thesis quantum Monte Carlo methods are applied to investigate the properties of a number of ultracold quantum systems. In Chapter 1 we discuss the analytical approach…
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…
Zero-temperature phase diagram of Yukawa bosons
O. N. Osychenko, G. E. Astrakharchik, F. Mazzanti +1
We study the zero-temperature phase diagram of bosons interacting via screened Coulomb (Yukawa) potential by means of the diffusion Monte Carlo method. The Yukawa potential is used…
Ewald method for polytropic potentials in arbitrary dimensionality
O. N. Osychenko, G. E. Astrakharchik, J. Boronat
The Ewald summation technique is generalised to power-law 1/|r|^k potentials in three-, two- and one-dimensional geometries with explicit formulae for all the components of the sum…
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…