3 papers
hep-lat2026
A first look at Structured-Multiscale Algebraic Multigrid for Lattice Field Theory
Pauline Schauerte, Jaime Fabián Nieto Castellanos, Jaime Fabián Nieto Castellanos +3
State-of-the-art solvers for the Dirac equation in Lattice QCD are based on adaptive multigrid methods. These require fine-tuning of many algorithmic parameters to achieve optimal…
math.NA2026
A Parallel-in-Time Combination Method for Parabolic Problems
Michael Griebel, Marc Alexander Schweitzer, Lukas Troska
In this article, we present a parallel discretization and solution method for parabolic problems with a higher number of space dimensions. It consists of a parallel-in-time approac…
math.NA2025
Chebyshev smoothing with adaptive block-FSAI preconditioners for the multilevel solution of higher-order problems
Pablo Jiménez Recio, Marc Alexander Schweitzer
In this paper, we assess the performance of adaptive and nested factorized sparse approximate inverses as smoothers in multilevel V-cycles, when smoothing is performed following th…