Numerical stochastic perturbation theory for full QCD

Numerical stochastic perturbation theory for full QCD
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全 QCD 数值随机微扰理论

DOI:
10.1088/1126-6708/2004/10/073
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发表时间:
2004
影响因子:
5.4
通讯作者:
L. Scorzato
L. Scorzato
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
F. Renzo;L. Scorzato

文献摘要

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我们全面介绍了格点规范理论的数值随机微扰理论方法。尤其与包含动力学费米子有关,在这种情况下,这被证明是令人惊讶的便宜。我们分析了潜在的随机过程,并讨论了其收敛性质。我们进行了一些基准计算,作为副产品,我们给出了威尔逊圈和威尔逊费米子的三圈临界质量的原始结果。
We give a full account of the Numerical Stochastic Perturbation Theory method for Lattice Gauge Theories. Particular relevance is given to the inclusion of dynamical fermions, which turns out to be surprisingly cheap in this context. We analyse the underlying stochastic process and discuss the convergence properties. We perform some benchmark calculations and?as a byproduct?we present original results for Wilson loops and the 3-loop critical mass for Wilson fermions.