Tidal effects in quantum field theory

Tidal effects in quantum field theory
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量子场论中的潮汐效应

DOI:
10.1007/jhep12(2020)024
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发表时间:
2020
影响因子:
5.4
通讯作者:
Andreas Helset
Andreas Helset
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Kays Haddad;Andreas Helset

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我们应用希尔伯特级数将标量场的引力作用扩展到高维算子的完整、非冗余基础,该算子在标量和韦尔张量中是二次的。这种作用的扩展充分描述了涉及曲率的二次幂的算子引起的潮汐效应。作为这种新作用的应用,我们计算了领先的后闵可夫斯基阶的所有无自旋潮汐效应。通过诉诸严格限制,这种计算得到了极大的简化,其中只有一组严格约束的运算符才能在单循环级别做出经典贡献。最后,我们使用这个幅度来导出 OG2\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \mathcal{O}\left({G}^2\right) $$\end{document} 对哈密顿量和散射角的潮汐校正。
We apply the Hilbert series to extend the gravitational action for a scalar field to a complete, non-redundant basis of higher-dimensional operators that is quadratic in the scalars and the Weyl tensor. Such an extension of the action fully describes tidal effects arising from operators involving two powers of the curvature. As an application of this new action, we compute all spinless tidal effects at the leading post-Minkowskian order. This computation is greatly simplified by appealing to the heavy limit, where only a severely constrained set of operators can contribute classically at the one-loop level. Finally, we use this amplitude to derive the OG2\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \mathcal{O}\left({G}^2\right) $$\end{document} tidal corrections to the Hamiltonian and the scattering angle.
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