Convergence issues in ChPT: a lattice perspective
Convergence issues in ChPT: a lattice perspective
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ChPT 中的收敛问题：格子视角
DOI：
10.22323/1.181.0027
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发表时间：
2013
影响因子：
5.4
通讯作者：
S. Durr
中科院分区：
文献类型：
--
作者：
S. Durr
本次评论讨论了ChPT系列在p机制中的实际收敛性。在SU（2）框架下，有许多新的结果，并且对\bar\ell_3和\bar\ell_4有了改进的估计.在SU（3）框架下，新的格点计算很少出现，低能常数L_i的精度提高也比较缓慢。我素描一些真正的ChPT扩展，其中包括手征对称性破缺（有限的晶格间距）和/或违反么正性（不同的海和价夸克质量）的额外来源的收敛问题。最后指出，夸克质量比m_u/m_d，m_s/m_d恰好是这样的，即不需要手征系列的重排来容纳实验的π介子和K介子质量。
This review addresses the practical convergence of the ChPT series in the p-regime. In the SU(2) framework there is a number of new results, and improved estimates of \bar\ell_3 and \bar\ell_4 are available. In the SU(3) framework few new lattice computations have appeared and the improvement in the precision of the low-energy constants L_i is comparatively slow. I sketch some of the convergence issues genuine to extensions of ChPT which include additional sources of chiral symmetry breaking (finite lattice spacing) and/or violations of unitarity (different sea and valence quark masses). Finally, it is pointed out that the quark mass ratios m_u/m_d, m_s/m_d happen to be such that no reordering of the chiral series is needed to accommodate the experimental pion and kaon masses.
影响因子：
5
作者：
S. Borsányi;S. Durr;Z. Fodor;S. Krieg;A. Schafer;E. Scholz;K. Szabó
通讯作者：
S. Borsányi;S. Durr;Z. Fodor;S. Krieg;A. Schafer;E. Scholz;K. Szabó