arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1602.00455hep-ph
收藏

基于第一性原理QCD研究的强子现象学

Hadron phenomenology from first-principle QCD studies

J. Papavassiliou

摘要:

控制Bethe-Salpeter方程动力学的核的形式对于获得强子可观测性质的定量准确预测是必不可少的。在目前的工作中,我们简要地回顾了基本的物理概念和场论技术采用的第一原理推导的一个通用的(过程无关的)组成部分,这个内核。这种“自上而下”的方法结合了从晶格模拟和戴森-施温格方程获得的非微扰成分,并计算了重整化群不变的夸克-胶子相互作用强度,这与从系统的“自下而上”处理中获得的相应数量非常一致,其中束缚态数据在一个定义良好的截断方案中拟合。

英文摘要:

The form of the kernel that controls the dynamics of the Bethe-Salpeter equations is essential for obtaining quantitatively accurate predictions for the observable properties of hadrons. In the present work we briefly review the basic physical concepts and field-theoretic techniques employed in a first-principle derivation of a universal (process-independent) component of this kernel. This "top-down" approach combines nonperturbative ingredients obtained from lattice simulations and Dyson-Schwinger equations, and furnishes a renormalization-group invariant quark-gluon interaction strength, which is in excellent agreement with the corresponding quantity obtained from a systematic "bottom-up" treatment, where bound-state data are fitted within a well-defined truncation scheme.

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。

↑