出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We present promising initial results of our adaptive multigrid solver developed for application
directly to the non-Hermitian Wilson-Dirac system in 4 dimensions, as opposed to the solver
developed in [1] for the corresponding normal equations. The key behind the success of this
algorithm is the use of an adaptive projection onto coarse grids that preserves the near null space
of the system matrix. We demonstrate that the resulting algorithm has weak dependence on the
gauge coupling and exhibits extremely mild critical slowing down in the chiral limit.
