90 citations · 817 across the 38 of their papers we have counts for
14 papers · 1 filter
PyLIT: Reformulation and implementation of the analytic continuation problem using kernel representation methods
Alexander Benedix Robles, Phil-Alexander Hofmann, Thomas Chuna +2
Path integral Monte Carlo (PIMC) simulations are a cornerstone for studying quantum many-body systems. The analytic continuation (AC) needed to estimate dynamic quantities from the…
Spin-resolved density response of the warm dense electron gas
Tobias Dornheim, Jan Vorberger, Zhandos Moldabekov +1
We present extensive new \emph{ab initio} path integral Monte Carlo (PIMC) results for the spin-resolved density response of the uniform electron gas (UEG) at warm dense matter con…
Path Integral Monte Carlo Simulations of liquid He without Fixed Nodes: Structural Properties and Collective Excitations
Tobias Dornheim, Zhandos Moldabekov, Jan Vorberger +1
We present extensive new \emph{ab initio} path integral Monte Carlo (PIMC) simulations of normal liquid He without any nodal constraints. This allows us to study the effects of…
Fermion Sign Problem in Path Integral Monte Carlo Simulations: Grand-canonical ensemble
Tobias Dornheim
We present a practical analysis of the fermion sign problem in fermionic path integral Monte Carlo (PIMC) simulations in the grand-canonical ensemble (GCE). As a representative mod…
A Machine-Learning Surrogate Model for ab initio Electronic Correlations at Extreme Conditions
Tobias Dornheim, Zhandos Moldabekov, Attila Cangi
The electronic structure in matter under extreme conditions is a challenging complex system prevalent in astrophysical objects and highly relevant for technological applications. W…
Ab initio path integral Monte Carlo approach to the momentum distribution of the uniform electron gas at finite temperature without fixed nodes
Tobias Dornheim, Maximilian Böhme, Burkhard Militzer +1
We present extensive new \textit{ab intio} path integral Monte Carlo results for the momentum distribution function of the uniform electron gas (UEG) in the warm de…