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arXiv 0811.4331hep-lat
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消除临界减速

The removal of critical slowing down

M. A. Clark, J. Brannick, R. C. Brower, S. F. McCormick, T. A. Manteuffel, J. C. Osborn, C. Rebbi

摘要:

我们提出了有希望的初步结果,我们的自适应多重网格求解器直接应用于4维非厄米特威尔逊-狄拉克系统,而不是在[1]中为相应的正常方程开发的求解器。该算法成功的关键是使用自适应投影到粗网格上,保持系统矩阵的近零空间。我们证明了所得到的算法具有弱的规范耦合的依赖性,并表现出极其温和的临界慢化的手征极限。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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