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- W3100437255 abstract "The construction of multigrid operators for disordered linear lattice operators, in particular the fermion matrix in lattice gauge theories, by means of algebraic multigrid and block LU decomposition is discussed. In this formalism, the effective coarse-grid operator is obtained as the Schur complement of the original matrix. An optimal approximation to it is found by a numerical optimization procedure akin to Monte Carlo renormalization, resulting in a generalized (gauge-path dependent) stencil that is easily evaluated for a given disorder field. Applications to preconditioning and relaxation methods are investigated." @default.
- W3100437255 created "2020-11-23" @default.
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- W3100437255 date "2001-01-01" @default.
- W3100437255 modified "2023-10-16" @default.
- W3100437255 title "Algebraic multigrid operators for disordered systems and lattice gauge theory" @default.
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- W3100437255 doi "https://doi.org/10.1063/1.1386842" @default.
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