On Lanczos-Type Methods for Wilson Fermions
On Lanczos-Type Methods for Wilson Fermions
复制标题
威尔逊费米子的 Lanczos 型方法
DOI:
10.1007/978-3-642-58333-9_5
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发表时间:
2000
期刊:
影响因子:
--
通讯作者:
M. Gutknecht
中科院分区:
文献类型:
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作者:
M. Gutknecht
Numerical simulations of lattice gauge theories with fermions rely heavily on the iterative solution of huge sparse linear systems of equations. Due to short recurrences, which mean small memory requirement, Lanczos-type methods (including suitable versions of the conjugate gradient method when applicable) are best suited for this type of problem. The Wilson formulation of the lattice Dirac operator leads to a matrix with special symmetry properties that makes the application of the classical biconjugate gradient (BICG) particularly attractive, but other methods, for example BICGSTAB and BICGSTAB2 have also been widely used. We discuss some of the pros and cons of these methods. In particular, we review the specific simplification of BICG, clarify some details, and discuss general results on the roundoff behavior.
DOI:
10.1137/0913035
发表时间:
1992-03-01
期刊:
SIAM JOURNAL ON SCIENTIFIC AND STATISTICAL COMPUTING
影响因子:
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作者:
VANDERVORST, HA
通讯作者:
VANDERVORST, HA