Gravity and Spin Forces in Gravitational Quantum Field Theory

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

ITP OpenIR > SCI期刊论文

	Wu, YL; Zhang, R 1,1
	Gravity and Spin Forces in Gravitational Quantum Field Theory
Source Publication	COMMUNICATIONS IN THEORETICAL PHYSICS
Language	英语
Keyword	GENERAL-RELATIVITY TORSION LAGRANGIANS
Abstract	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.
	2018
ISSN	0253-6102
Volume	70 Issue:2 Pages:161-174
Subject Area	Physics
MOST Discipline Catalogue	Physics, Multidisciplinary
DOI	10.1088/0253-6102/70/2/161
Indexed By	SCIE
Citation statistics
Document Type	期刊论文
Identifier	http://ir.itp.ac.cn/handle/311006/22845
Collection	SCI期刊论文
Affiliation	1.[Wu, Yue-Liang 2.Chinese Acad Sci, Inst Theoret Phys, Key Lab Theoret Phys, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Sch Phys Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 4.Univ Chinese Acad Sci, ICTP AP, Beijing 100049, Peoples R China
Recommended Citation 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.

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