Recent developments in quantum Monte Carlo simulations with applications for cold gases

L Pollet - Reports on progress in physics, 2012 - iopscience.iop.org
This is a review of recent developments in Monte Carlo methods in the field of ultracold
gases. For bosonic atoms in an optical lattice we discuss path-integral Monte Carlo …

Worm algorithm and diagrammatic Monte Carlo: A new approach to continuous-space path integral Monte Carlo simulations

M Boninsegni, NV Prokof'Ev, BV Svistunov - Physical Review E—Statistical …, 2006 - APS
A detailed description is provided of a new worm algorithm, enabling the accurate
computation of thermodynamic properties of quantum many-body systems in continuous …

Microscopic molecular superfluid response: theory and simulations

T Zeng, PN Roy - Reports on Progress in Physics, 2014 - iopscience.iop.org
Since its discovery in 1938, superfluidity has been the subject of much investigation
because it provides a unique example of a macroscopic manifestation of quantum …

[HTML][HTML] Temperature dependence of nuclear quantum effects on liquid water via artificial neural network model based on SCAN meta-GGA functional

Y Yao, Y Kanai - The Journal of Chemical Physics, 2020 - pubs.aip.org
We investigate the temperature dependence of nuclear quantum effects (NQEs) on structural
and dynamic properties of liquid water by training a neural network force field using first …

Excitations and Stripe Phase Formation in a Two-Dimensional Dipolar<? format?> Bose Gas with Tilted Polarization

A Macia, D Hufnagl, F Mazzanti, J Boronat, RE Zillich - Physical review letters, 2012 - APS
We present calculations of the ground state and excitations of an anisotropic dipolar Bose
gas in two dimensions, realized by a nonperpendicular polarization with respect to the …

Measurement-based measure of the size of macroscopic quantum superpositions

JI Korsbakken, KB Whaley, J Dubois, JI Cirac - Physical Review A—Atomic …, 2007 - APS
Recent experiments claiming the formation of quantum superposition states in near-
macroscopic systems raise the question of how the sizes of general quantum superposition …

Exponential propagators (integrators) for the time-dependent Schrödinger equation

AD Bandrauk, H Lu - Journal of Theoretical and Computational …, 2013 - World Scientific
The time-dependent Schrödinger Equation (TDSE) is a parabolic partial differential equation
(PDE) comparable to a diffusion equation but with imaginary time. Due to its first order time …

Classical and quantum filaments in the ground state of trapped dipolar Bose gases

F Cinti, M Boninsegni - Physical Review A, 2017 - APS
We study, by quantum Monte Carlo simulations, the ground state of a harmonically confined
dipolar Bose gas with aligned dipole moments and with the inclusion of a repulsive two …

Population size bias in diffusion Monte Carlo

M Boninsegni, S Moroni - Physical Review E—Statistical, Nonlinear, and Soft …, 2012 - APS
The size of the population of random walkers required to obtain converged estimates in
diffusion Monte Carlo (DMC) increases dramatically with system size. We illustrate this by …

Path integral ground state study of finite-size systems: Application to small (parahydrogen) N (N= 2–20) clusters

JE Cuervo, PN Roy - The Journal of chemical physics, 2006 - pubs.aip.org
We use the path integral ground state method to study the energetic and structural
properties of small para-H 2 clusters of sizes ranging from 2 to 20 molecules⁠. A fourth order …