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	More on the bending of light in quantum gravity
	Bai, D; Huang, Y; Huang, Y (reprint author), Chinese Acad Sci, Inst Theoret Phys, Key Lab Theoret Phys, Beijing 100190, Peoples R China.; Huang, Y (reprint author), Univ Chinese Acad Sci, Sch Phys Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China.
刊名	PHYSICAL REVIEW D
	2017
卷号	95期号:6页码:64045
DOI	http://dx.doi.org/10.1103/PhysRevD.95.064045
英文摘要	We reconsider the long-range effects of the scattering of massless scalars and photons from a massive scalar object in quantum gravity. At the one-loop level, the relevant quantum mechanical corrections could be sorted into the graviton double-cut contributions, massless-scalar double-cut contributions and photon double-cut contributions. In Reference [N. E. J. Bjerrum-Bohr, J. F. Donoghue, B. R. Holstein, L. Plante, and P. Vanhove, Phys. Rev. Lett. 114, 061301 (2015), J. High Energy Phys. 11 (2016) 117] N. E. J. Bjerrum-Bohr et al. have considered explicitly the implications of the graviton double-cut contributions on the gravitational bending of light and some classical formulations of the equivalence principle, using the modern double-copy constructions and on-shell unitarity techniques. In this article, instead we consider all three contributions and redo the analysis using the traditional Feynman diagrammatic approach. Our results on the graviton double-cut contributions agree with the aforementioned references, acting as a nontrivial check of previous computations. Furthermore, it turns out that the massless-scalar double-cut contributions and the photon double-cut contributions do leave nonvanishing quantum effects on the scattering amplitudes and the gravitational bending of light. Yet, we find that the general structure of the gravitational amplitudes and the quantum discrepancy of the equivalence principle suggested in the aforementioned references remain intact.
学科主题	Astronomy & Astrophysics ; Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/22099]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Bai, D; Huang, Y (reprint author), Chinese Acad Sci, Inst Theoret Phys, Key Lab Theoret Phys, Beijing 100190, Peoples R China.; Huang, Y (reprint author), Univ Chinese Acad Sci, Sch Phys Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China.
推荐引用方式 GB/T 7714	Bai, D,Huang, Y,Huang, Y ,et al. More on the bending of light in quantum gravity[J]. PHYSICAL REVIEW D,2017,95(6):64045.
APA	Bai, D,Huang, Y,Huang, Y ,&Huang, Y .(2017).More on the bending of light in quantum gravity.PHYSICAL REVIEW D,95(6),64045.
MLA	Bai, D,et al."More on the bending of light in quantum gravity".PHYSICAL REVIEW D 95.6(2017):64045.

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