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arXiv 0808.4034gr-qc
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用有效场论方法重整化经典能量动量张量

Classical energy momentum tensor renormalisation via effective field theory methods

Umberto Cannella, Riccardo Sturani

摘要:

我们应用有效场论的方法,广义相对论,介绍了由戈德伯格和罗斯坦,研究类点和类弦源的标量张量理论的重力。在这个框架内,我们计算经典的能量动量张量重整化到第一后牛顿秩序,或在额外的标量场的情况下,直到第一秩序的(非导数)三线性相互作用项:这允许写下的标准(牛顿)引力势和额外的标量势的修正。在一维扩展源的情况下,我们给出了另一种推导的重正化的弦张力,使重新分析之间的差异所获得的结果Dabholkar和哈维在一篇论文中,由Buonanno和Damour在另一个,已经讨论了后者。

英文摘要:

We apply the Effective Field Theory approach to General Relativity, introduced by Goldberger and Rothstein, to study point-like and string-like sources in the context of scalar-tensor theories of gravity. Within this framework we compute the classical energy-momentum tensor renormalization to first Post-Newtonian order or, in the case of extra scalar fields, up to first order in the (non-derivative) trilinear interaction terms: this allows to write down the corrections to the standard (Newtonian) gravitational potential and to the extra-scalar potential. In the case of one-dimensional extended sources we give an alternative derivation of the renormalization of the string tension enabling a re-analysis of the discrepancy between the results obtained by Dabholkar and Harvey in one paper and by Buonanno and Damour in another, already discussed in the latter.

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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