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arXiv 1312.3591hep-lat
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用Wilson费米子和树能级改进规范action确定三味格格点量子色动力学中的$c_\mathrm A$

Determination of $c_\mathrm A$ in three-flavour lattice QCD with Wilson fermions and tree-level improved gauge action

John Bulava, Michele Della Morte, Jochen Heitger, Christian Wittemeier

摘要:

我们正在进行的非微扰确定的轴向电流,$c_\mathrm A$,与三种口味的动态$\mathrm O(a)$改进的威尔逊夸克和树级Symanzik改进的规范作用的改进系数的报告。我们的计算是基于模拟与openQCD代码。一系列耦合的改进条件是制定薛定谔功能边界条件,并施加沿着参数空间中的恒定物理线。我们的分析涉及到关联函数与边界波函数,这样一个大的灵敏度$c_\mathrm A$可以达到利用PCAC关系与两个不同的赝标态。

英文摘要:

We report on an ongoing non-perturbative determination of the improvement coefficient of the axial current, $c_\mathrm A$, with three flavours of dynamical $\mathrm O(a)$ improved Wilson quarks and tree-level Symanzik improved gauge action. Our computations are based on simulations with the openQCD code. The improvement condition for a range of couplings is formulated with Schrödinger functional boundary conditions and imposed along a line of constant physics in parameter space. Our analysis involves correlation functions with boundary wave functions such that a large sensitivity to $c_\mathrm A$ can be reached by exploiting the PCAC relation with two different pseudoscalar states.

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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