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 1003.1679math-phhep-thmath.MP
收藏

指数重整化

Exponential renormalization

Kurusch Ebrahimi-Fard, Frederic Patras

摘要:

超越经典的加法和乘法方法,我们提出了一个“指数”方法的微扰重整化。利用Green函数的Dyson恒等式以及Faa di Bruno Hopf代数与Feynman图的Hopf代数之间的联系,分析了它与形式幂级数合成的关系.最后,我们认为,新的方法有几个有吸引力的功能,包括BPHZ方法。后者可以被看作是一个特殊的情况下,新的重整化方案映射的Rota-Baxter性质的程序。据我们所知,虽然非常自然的群论和物理的观点,在本文中介绍的几个想法似乎是新的(除了指数的方法,让我们提到的概念的抗衡因子和n阶裸耦合常数)。

英文摘要:

Moving beyond the classical additive and multiplicative approaches, we present an "exponential" method for perturbative renormalization. Using Dyson's identity for Green's functions as well as the link between the Faa di Bruno Hopf algebra and the Hopf algebras of Feynman graphs, its relation to the composition of formal power series is analyzed. Eventually, we argue that the new method has several attractive features and encompasses the BPHZ method. The latter can be seen as a special case of the new procedure for renormalization scheme maps with the Rota-Baxter property. To our best knowledge, although very natural from group-theoretical and physical points of view, several ideas introduced in the present paper seem to be new (besides the exponential method, let us mention the notions of counterfactors and of order n bare coupling constants).

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。

↑