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Wu, YL; Zhang, R1,1
Gravity and Spin Forces in Gravitational Quantum Field Theory
发表期刊COMMUNICATIONS IN THEORETICAL PHYSICS
语种英语
关键词GENERAL-RELATIVITY TORSION LAGRANGIANS
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.
2018
ISSN0253-6102
卷号70期号:2页码:161-174
学科领域Physics
学科门类Physics, Multidisciplinary
DOI10.1088/0253-6102/70/2/161
收录类别SCIE
引用统计
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/22845
专题理论物理所科研产出_SCI论文
作者单位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
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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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