A dynamical study of the chirally rotated Schr"odinger functional in QCD
A dynamical study of the chirally rotated Schr"odinger functional in QCD
复制标题
QCD中手性旋转薛定格泛函的动力学研究
DOI：
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复制
发表时间：
2014
期刊：
影响因子：
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通讯作者：
S. Sint
中科院分区：
文献类型：
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作者：
M. D. Brida;S. Sint
威尔逊-费米子的手征旋转薛定谔泛函允许有限体积、质量无关的重整化方案与自动O（$a$）改进兼容。到目前为止，在QCD中，只研究了淬火近似下的设置。在这里，我们给出了$N_{
mf} = 2$夸克动力学味的几种夸克双线性重整化因子.我们讨论如何这些重整化因子可以很容易地从两点函数的简单比率，并显示如何自动O（$a$）的改进是在工作中。作为本研究的副产品，非单重态轴向流的重整化，$Z_A$，被非常精确地确定。
The chirally rotated Schr"odinger functional for Wilson-fermions allows for finite-volume, mass-independent renormalization schemes compatible with automatic O($a$) improvement. So far, in QCD, the set-up has only been studied in the quenched approximation. Here we present first results for $N_{
m f} = 2$ dynamical quark-flavours for several renormalization factors of quark-bilinears. We discuss how these renormalization factors can be easily obtained from simple ratios of two-point functions, and show how automatic O($a$) improvement is at work. As a by-product of this investigation the renormalization of the non-singlet axial current, $Z_A$, is determined very precisely.