100 citations · 684 across the 58 of their papers we have counts for
26 papers · 1 filter
The quadratic density response function for non-interacting fermions at arbitrary temperature
Pontus Svensson, Jan Vorberger, Zhandos A. Moldabekov +5
We develop and implement the quadratic density response function of non-interacting fermions at arbitrary temperature, frequencies, and wave vectors. Starting from a Green's functi…
Kinetic energy from the cubic sum rule of the dynamic structure factor
Fotios Kalkavouras, Panagiotis Tolias, Sebastian Schwalbe +6
The third frequency moment sum rule of the dynamic structure factor is explored for the first time as an alternative estimator of the kinetic energy of quantu…
Thermal resilience of the ITER tungsten first wall to runaway electron impact
S. Ratynskaia, K. Paschalidis, T. Rizzi +7
The fast volumetric deposition of multi-MeV high current runaway electron (RE) beams constitutes the most critical issue for the ITER tungsten (W) first wall (FW) longevity. Such r…
Wall damage due to oblique high velocity dust impacts
Panagiotis Tolias, Marco De Angeli, Dario Ripamonti +3
Runaway electron termination on plasma facing components can trigger material explosions that are accompanied by the expulsion of fast solid debris. Due to the large kinetic energi…
Exact series expansion for even frequency moments of the dynamic structure factor
Panagiotis Tolias, Jan Vorberger, Tobias Dornheim
An exact series representation of the even frequency moments of the dynamic structure factor is derived. Truncations are proposed that allow to evaluate the explicitly unknown seco…
Roadmap for warm dense matter physics
Jan Vorberger, Frank Graziani, David Riley +71
This roadmap presents the state-of-the-art, current challenges and near future developments anticipated in the thriving field of warm dense matter physics. Originating from strongl…
Static linear density response from X-ray Thomson scattering measurements: a case study of warm dense beryllium
Sebastian Schwalbe, Hannah Bellenbaum, Tilo Döppner +8
Linear response theory is ubiquitous throughout physics and plays a central role in the theoretical description of warm dense matter -- an extreme state that occurs within compact…
Application of a spherically averaged pair potential in \emph{ab initio} path integral Monte Carlo simulations of the warm dense electron gas
Tobias Dornheim, Thomas M. Chuna, Hannah M. Bellenbaum +3
Spherically averaged periodic pair potentials offer the enticing promise to provide accurate results at a drastically reduced computational cost compared to the traditional Ewald s…
Dynamic properties of the warm dense uniform electron gas with the qSTLS dielectric scheme
Panagiotis Tolias, Fotios Kalkavouras, Tobias Dornheim +1
The recently derived Fourier--Matsubara expansion of imaginary--time correlation functions comprises an exact result of linear response theory for finite-temperature quantum many-b…
On the density-density correlations of the non-interacting finite temperature electron gas
Panagiotis Tolias, Tobias Dornheim, Jan Vorberger
The density-density correlations of the non-interacting finite temperature electron gas are discussed in detail. Starting from the ideal linear density response function and utiliz…
Model-free Rayleigh weight from x-ray Thomson scattering measurements
Tobias Dornheim, Hannah M. Bellenbaum, Mandy Bethkenhagen +16
X-ray Thomson scattering (XRTS) has emerged as a powerful tool for the diagnostics of matter under extreme conditions. In principle, it gives one access to important system paramet…
Normal high velocity solid dust impacts on tiles of tokamak-relevant temperature
Marco De Angeli, Panagiotis Tolias, Francisco Suzuki-Vidal +7
Runaway electron incidence on plasma facing components triggers explosive events that are accompanied by the expulsion of fast solid debris. Subsequent dust-wall high speed impacts…
The MEMENTO code for modelling of macroscopic melt motion in fusion devices
K. Paschalidis, F. Lucco Castello, S. Ratynskaia +2
The MEMENTO (MEtallic Melt Evolution in Next-step TOkamaks) code is a new numerical implementation of the physics model originally developed for the MEMOS-U code with the objective…
Ab initio Density Response and Local Field Factor of Warm Dense Hydrogen
Tobias Dornheim, Sebastian Schwalbe, Panagiotis Tolias +3
We present quasi-exact ab initio path integral Monte Carlo (PIMC) results for the partial static density responses and local field factors of hydrogen in the warm dense matter regi…
Unraveling electronic correlations in warm dense quantum plasmas
Tobias Dornheim, Tilo Döppner, Panagiotis Tolias +10
The study of matter at extreme densities and temperatures has emerged as a highly active frontier at the interface of plasma physics, material science and quantum chemistry with di…
X-ray Thomson scattering absolute intensity from the f-sum rule in the imaginary-time domain
Tobias Dornheim, Tilo Döppner, Andrew D. Baczewski +10
We present a formally exact and simulation-free approach for the normalization of X-ray Thomson scattering (XRTS) spectra based on the f-sum rule of the imaginary-time correlation…
Electronic Density Response of Warm Dense Matter
Tobias Dornheim, Zhandos A. Moldabekov, Kushal Ramakrishna +11
Matter at extreme temperatures and pressures -- commonly known as warm dense matter (WDM) in the literature -- is ubiquitous throughout our Universe and occurs in a number of astro…
On the Klimontovich description of complex (dusty) plasmas
P. Tolias
The numerous idealizations that are involved in the exact microscopic statistical description of complex (dusty) plasmas are discussed in detail. The two prevailing approaches in t…
Wall cratering upon high velocity normal dust impact
Panagiotis Tolias, Marco De Angeli, Dario Ripamonti +4
Dust-wall high speed impacts, triggered by the termination of runaway electrons on plasma facing components, constitute a source of erosion. Normal high velocity mechanical impacts…
Bridge functions of classical one-component plasmas
F. Lucco Castello, P. Tolias
In a recent paper, Lucco Castello et al. [arXiv:2107.03537] performed systematic extractions of classical one-component plasma bridge functions from molecular dynamics simulations…
Classical bridge functions in classical and quantum plasma liquids
F. Lucco Castello, P. Tolias, T. Dornheim
Bridge functions, the missing link in the exact description of strong correlations, are indirectly extracted from specially designed molecular dynamics simulations of classical one…
Analytical representation of the Local Field Correction of the Uniform Electron Gas within the Effective Static Approximation
Tobias Dornheim, Zhandos A. Moldabekov, Panagiotis Tolias
The description of electronic exchange--correlation effects is of paramount importance for many applications in physics, chemistry, and beyond. In a recent Letter, Dornheim \textit…
Isomorph invariance and thermodynamics of repulsive dense bi-Yukawa one-component plasmas
F. Lucco Castello, P. Tolias, J. S. Hansen +1
In numerous realizations of complex plasmas, dust-dust interactions are characterized by two screening lengths and are thus better described by a combination of Yukawa potentials.…
Isomorph-based empirically modified hypernetted-chain approach for strongly coupled Yukawa one-component plasmas
P. Tolias, F. Lucco Castello
Isomorph theory is employed in order to establish a mapping between the bridge function of Coulomb and Yukawa one-component plasmas. Within an exact invariance ansatz for the bridg…