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hep-lat2014★ 3 cited
Multigrid Preconditioning for the Overlap Operator in Lattice QCD
James Brannick, Andreas Frommer, Karsten Kahl +3
The overlap operator is a lattice discretization of the Dirac operator of quantum chromodynamics, the fundamental physical theory of the strong interaction between the quarks. As o…
hep-lat2009★ 3 cited
The role of multigrid algorithms for LQCD
Ronald Babich, James Brannick, Richard C. Brower +4
We report on the first successful QCD multigrid algorithm which demonstrates constant convergence rates independent of quark mass and lattice volume for the Wilson Dirac operator.…