Gravity and Spin Forces in Gravitational Quantum Field Theory

doi:10.1088/0253-6102/70/2/161

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	Gravity and Spin Forces in Gravitational Quantum Field Theory
	Wu, YL; Zhang, R 2,2
刊名	COMMUNICATIONS IN THEORETICAL PHYSICS
	2018
卷号	70 期号:2 页码:161-174
关键词	GENERAL-RELATIVITY TORSION LAGRANGIANS
ISSN号	0253-6102
DOI	10.1088/0253-6102/70/2/161
英文摘要	In the new framework of gravitational quantum field theory (GQFT) with spin and scaling gauge invariance developed in Phys. Rev. D 93 (2016) 024012-1, we make a perturbative expansion for the full action in a background field which accounts for the early inflationary universe. We decompose the bicovariant vector fields of gravifield and spin gauge field with Lorentz and spin symmetries SO(1,3) and SP(1,3) in biframe spacetime into SO(3) representations for deriving the propagators of the basic quantum fields and extract their interaction terms. The leading order Feynman rules are presented. A tree-level 2 to 2 scattering amplitude of the Dirac fermions, through a gravifield and a spin gauge field, is calculated and compared to the Born approximation of the potential. It is shown that the Newton's gravitational law in the early universe is modified due to the background field. The spin dependence of the gravitational potential is demonstrated.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/22845]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Chinese Acad Sci, Inst Theoret Phys, Key Lab Theoret Phys, Beijing 100190, Peoples R China 2.[Wu, Yue-Liang 3.Univ Chinese Acad Sci, ICTP AP, Beijing 100049, Peoples R China 4.Univ Chinese Acad Sci, Sch Phys Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wu, YL,Zhang, R. Gravity and Spin Forces in Gravitational Quantum Field Theory[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2018,70(2):161-174.
APA	Wu, YL,&Zhang, R.(2018).Gravity and Spin Forces in Gravitational Quantum Field Theory.COMMUNICATIONS IN THEORETICAL PHYSICS,70(2),161-174.
MLA	Wu, YL,et al."Gravity and Spin Forces in Gravitational Quantum Field Theory".COMMUNICATIONS IN THEORETICAL PHYSICS 70.2(2018):161-174.