有根交错费米子的QCD
QCD with rooted staggered fermions
摘要：
本文将对交错格点量子色动力学的“四次方根技巧”的理论现状作一综述。在QCD的这种正则化中，每种物理味道都使用了一个单独的交错夸克场，并且通过对每种味道的交错行列式取四次方根来消除使用交错费米子所带来的固有的四重多重性。在非零晶格间距，由此产生的理论是非局部的，而不是单一的，但现在有强有力的论点，这种疾病是治愈的连续极限。此外，连续极限的方法可以在有效场论如交错手征微扰理论的框架内详细理解。
英文摘要：
In this talk, I will give an overview of the theoretical status of staggered Lattice QCD with the "fourth-root trick." In this regularization of QCD, a separate staggered quark field is used for each physical flavor, and the inherent four-fold multiplicity that comes with the use of staggered fermions is removed by taking the fourth root of the staggered determinant for each flavor. At nonzero lattice spacing, the resulting theory is nonlocal and not unitary, but there are now strong arguments that this disease is cured in the continuum limit. In addition, the approach to the continuum limit can be understood in detail in the framework of effective field theories such as staggered chiral perturbation theory.
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。
