Adaptive multigrid algorithm for the QCD Dirac-Wilson operator

J. Brannick, R. C. Brower, M. A. Clark, J. C. Osborn, C. Rebbi

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations


We present a new multigrid solver that is suitable for the Dirac operator in the presence of disordered gauge fields. The key behind the success of the algorithm is an adaptive projection onto the coarse grids that preserves the near null space. The resulting algorithm has weak dependence on the gauge coupling and exhibits mild critical slowing down in the chiral limit. Results are presented for the Wilson Dirac operator of the 2d U(1) Schwinger model.

Original languageEnglish (US)
Article number029
JournalProceedings of Science
StatePublished - 2007
Event25th International Symposium on Lattice Field Theory, LATTICE 2007 - Regensburg, Germany
Duration: Jul 30 2007Aug 4 2007

All Science Journal Classification (ASJC) codes

  • General


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