کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
502169 863687 2009 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Low-lying Wilson Dirac operator eigenvector mixing in dynamical overlap hybrid Monte Carlo
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Low-lying Wilson Dirac operator eigenvector mixing in dynamical overlap hybrid Monte Carlo
چکیده انگلیسی

Current dynamical overlap fermion hybrid Monte Carlo simulations encounter large fermionic forces when there is mixing between eigenvectors of the kernel operator with near zero-eigenvalues. This leads to low acceptance rates when there is a large density of near zero eigenvalues. I present a method where these large forces are eliminated and the large action jumps seen when two eigenvalues approach zero are significantly reduced. This significantly increases the stability of the algorithm, and allows the use of larger integration time steps.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Physics Communications - Volume 180, Issue 2, February 2009, Pages 180–191
نویسندگان
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