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arXiv 1902.04110hep-phhep-lathep-th
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非微扰强耦合的第一性原理计算

Calculation of the non-perturbative strong coupling from first principles

Fabio Siringo

摘要:

在纯Yang-Mills理论中强耦合运行的屏蔽动量减方案的框架下,研究了屏蔽质量展开的成功性。通过精确的Slavnov-Taylor和Nielsen恒等式,从第一性原理导出了固定耦合展开的优化的一组非常具有预测性和自包含的固定条件,得到了传播子、耦合和β函数的明确解析单循环表达式。一个很好的协议被发现与晶格数据。在建议的屏蔽重整化方案中,单调运行的耦合出现饱和的IR在有限IR稳定的不动点$g=9.40$的beta函数过零。一个简单的解析表达式推导出的领先行为的β在IR。

英文摘要:

The success of the screened massive expansion is investigated in the framework of a screened momentum-subtraction scheme for the running of the strong coupling in pure Yang-Mills theory. By the exact Slavnov-Taylor and Nielsen identities, a very predictive and self-contained set of stationary conditions are derived for the optimization of the fixed-coupling expansion, yielding explicit analytical one-loop expressions for the propagators, the coupling and the beta function, from first principles. An excellent agreement is found with the lattice data. In the proposed screened renormalization scheme, a monotonic running coupling emerges which saturates in the IR at the finite IR stable fixed point $g=9.40$ where the beta function crosses the zero. A simple analytical expression is derived for the leading behavior of the beta in the IR.

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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