Adaptive multigrid algorithm for lattice QCD

被引：48
|
作者：
Brannick, J. [1 ]
Brower, R. C. [2 ,3 ]
Clark, M. A. [2 ]
Osborn, J. C. [2 ]
Rebbi, C. [2 ,3 ]
机构：
[1] Penn State Univ, Dept Math, University Pk, PA 16802 USA
[2] Boston Univ, Ctr Computat Sci, Boston, MA 02215 USA
[3] Boston Univ, Dept Phys, Boston, MA 02215 USA
来源：
PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 04期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1103/PhysRevLett.100.041601
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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 very little critical slowing down in the chiral limit. Results are presented for the Wilson-Dirac operator of the 2D U(1) Schwinger model.
引用
收藏
页数：4
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