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arXiv 0712.4354hep-lat
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高斯涂抹Wilson费米子的格点量子色动力学研究

Investigation of Lattice QCD with Wilson fermions with Gaussian Smearing

Asit K. De, A. Harindranath, Jyotirmoy Maiti

摘要:

本文详细研究了具有两种动力学夸克的格点量子色动力学中的π、ρ质量、衰变常数和夸克质量。我们使用Wilson规范和费米子作用在$ 16^3 \times 32 $晶格上的$β=5.6$在Wilson跳跃参数在0.156 - 0.158范围内的八个值。我们进行了详细的调查高斯拖尾的影响源和汇。我们确定的最佳涂抹参数的威尔逊跳跃参数的每个值的各种放大器。涂抹上的观测量的影响进行比较与使用本地运营商的测量。我们还调查了系统的影响,在提取质量和衰变常数使用不同类型的关联函数的π观测。我们对不同算子的手征外推和有限体积效应进行了有趣的观察。

英文摘要:

We present a detailed study of pion and rho mass, decay constants and quark mass in Lattice QCD with two flavors of dynamical quarks. We use Wilson gauge and fermion action at $β=5.6$ on $ 16^3 \times 32 $ lattice at eight values of the Wilson hopping parameter in the range 0.156 - 0.158. We perform a detailed investigation of the effect of gaussian smearing on both source and sink. We determine the optimum smearing parameter for various correlators for each value of the Wilson hopping parameter. The effects of smearing on observables are compared with those measured using local operators. We also investigate systematic effects in the extraction of masses and decay constants using different types of correlation functions for pion observables. We make interesting observations regarding chiral extrapolations and finite volume effects of different operators.

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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