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6 papers · 1 filter
The Continuous-Pole-Expansion method to obtain spectra of electronic lattice models
Peter Staar, Bart Ydens, Anton Kozhevnikov +2
We present a new algorithm to analytically continue the self-energy of quantum many-body systems from Matsubara frequencies to the real axis. The method allows straightforward, una…
Circum-stellar medium around rotating massive stars at solar metallicity
Cyril Georgy, Rolf Walder, Doris Folini +3
Aims. Observations show nebulae around some massive stars but not around others. If observed, their chemical composition is far from homogeneous. Our goal is to put these observati…
GPU Accelerated Particle Visualization with Splotch
Marzia Rivi, Claudio Gheller, Tim Dykes +2
Splotch is a rendering algorithm for exploration and visual discovery in particle-based datasets coming from astronomical observations or numerical simulations. The strengths of th…
Apar-T: code, validation, and physical interpretation of particle-in-cell results
Mickaël Melzani, Christophe Winisdoerffer, Rolf Walder +4
We present the parallel particle-in-cell (PIC) code Apar-T and, more importantly, address the fundamental question of the relations between the PIC model, the Vlasov-Maxwell theory…
On Silicon Group Elements Ejected by Supernovae Type Ia
Soma De, F. X. Timmes, Themis Athanassiadou +6
There is compelling evidence that the peak brightness of a Type Ia supernova is affected by the electron fraction Ye at the time of the explosion. The electron fraction is set by t…
DCA: Dynamical Cluster Approximation with continuous lattice self-energy
Peter Staar, Thomas Maier, Thomas C. Schulthess
The dynamical cluster approximation (DCA) is a systematic extension beyond the single site approximation in dynamical mean field theory (DMFT), to include spatially non-local corre…