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Wu, YL; Zhang, R1,1
Gravity and Spin Forces in Gravitational Quantum Field Theory
AbstractIn 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.
Subject AreaPhysics
MOST Discipline CataloguePhysics, Multidisciplinary
Indexed BySCIE
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Document Type期刊论文
Affiliation1.[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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