کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10720701 | 1031316 | 2011 | 27 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Critical slowing down and error analysis in lattice QCD simulations
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
فیزیک ریاضی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We study the critical slowing down towards the continuum limit of lattice QCD simulations with Hybrid Monte Carlo type algorithms. In particular for the squared topological charge we find it to be very severe with an effective dynamical critical exponent of about 5 in pure gauge theory. We also consider Wilson loops which we can demonstrate to decouple from the modes which slow down the topological charge. Quenched observables are studied and a comparison to simulations of full QCD is made. In order to deal with the slow modes in the simulation, we propose a method to incorporate the information from slow observables into the error analysis of physical observables and arrive at safer error estimates.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics B - Volume 845, Issue 1, 1 April 2011, Pages 93-119
Journal: Nuclear Physics B - Volume 845, Issue 1, 1 April 2011, Pages 93-119
نویسندگان
ALPHA Collaboration ALPHA Collaboration, Stefan Schaefer, Rainer Sommer, Francesco Virotta,