197 citations · 2.7k across the 110 of their papers we have counts for
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Attenuating the fermion sign problem in path integral Monte Carlo simulations using the Bogoliubov inequality and thermodynamic integration
Tobias Dornheim, Michele Invernizzi, Jan Vorberger +1
Accurate thermodynamic simulations of correlated fermions using path integral Monte Carlo (PIMC) methods are of paramount importance for many applications such as the description o…
Large-scale Neural Solvers for Partial Differential Equations
Patrick Stiller, Friedrich Bethke, Maximilian Böhme +6
Solving partial differential equations (PDE) is an indispensable part of many branches of science as many processes can be modelled in terms of PDEs. However, recent numerical solv…
First-principles modeling of plasmons in aluminum under ambient and extreme conditions
Kushal Ramakrishna, Attila Cangi, Tobias Dornheim +2
The theoretical understanding of plasmon behavior is crucial for an accurate interpretation of inelastic scattering diagnostics in many experiments. We highlight the utility of lin…
Ab initio results for the plasmon dispersion and damping of the warm dense electron gas
Paul Hamann, Jan Vorberger, Tobias Dornheim +2
Warm dense matter (WDM) is an exotic state on the border between condensed matter and dense plasmas. Important occurrences of WDM include dense astrophysical objects, matter in the…
Lattice dynamics and ultrafast energy flow between electrons, spins, and phonons in a 3d ferromagnet
Daniela Zahn, Florian Jakobs, Yoav William Windsor +8
The ultrafast dynamics of magnetic order in a ferromagnet are governed by the interplay between electronic, magnetic and lattice degrees of freedom. In order to obtain a microscopi…
Effective Static Approximation: A Fast and Reliable Tool for Warm Dense Matter Theory
Tobias Dornheim, Attila Cangi, Kushal Ramakrishna +3
We present an \emph{Effective Static Approximation} (ESA) to the local field correction (LFC) of the electron gas that enables highly accurate calculations of electronic properties…
Dynamic properties of the warm dense electron gas: an ab initio path integral Monte Carlo approach
Paul Hamann, Tobias Dornheim, Jan Vorberger +2
There is growing interest in warm dense matter (WDM) -- an exotic state on the border between condensed matter and plasmas. Due to the simultaneous importance of quantum and correl…
Nonlinear Electronic Density Response in Warm Dense Matter
Tobias Dornheim, Jan Vorberger, Michael Bonitz
Warm dense matter (WDM)---an extreme state with high temperatures and densities that occurs e.g. in astrophysical objects---constitutes one of the most active fields in plasma phys…
Finite-size effects in the reconstruction of dynamic properties from ab initio path integral Monte-Carlo simulations
Tobias Dornheim, Jan Vorberger
We systematically investigate finite-size effects in the dynamic structure factor of the uniform electron gas obtained via the analytic continuation of \textit{ab initio}…
Ab initio path integral Monte Carlo simulation of the Uniform Electron Gas in the High Energy Density Regime
Tobias Dornheim, Zhandos Moldabekov, Jan Vorberger +1
The response of the uniform electron gas (UEG) to an external perturbation is of paramount importance for many applications. Recently, highly accurate results for the static densit…
Influence of finite temperature Exchange-Correlation effects in Hydrogen
Kushal Ramakrishna, Tobias Dornheim, Jan Vorberger
We use density functional molecular dynamics (DFT-MD) to study the effect of finite temperature exchange-correlation (xc) in Hydrogen. Using the Kohn-Sham approach, the xc energy o…