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题名: Theory of quantum gravity beyond Einstein and space-time dynamics with quantum inflation
作者: Wu, YL
刊名: INTERNATIONAL JOURNAL OF MODERN PHYSICS A
出版日期: 2015
卷号: 30, 期号:28-29, 页码:1545002
关键词: Quantum gravity ;  bi-frame space-time ;  spinnic and scaling gauge symmetries ;  Gravifield ;  coordinate-independence and gauge-invariance ;  gravity equation beyond Einstein ;  conservation laws ;  quantum inflation
学科分类: Physics
DOI: http://dx.doi.org/10.1142/S0217751X15450025
通讯作者: Wu, YL (reprint author), Chinese Acad Sci, SKLTP, Inst Theoret Phys, KITPC, Beijing 100190, Peoples R China.
文章类型: Article
英文摘要: In this talk, I present a theory of quantum gravity beyond Einstein. The theory is established based on spinnic and scaling gauge symmetries by treating the gravitational force on the same footing as the electroweak and strong forces. A bi-frame space-time is initiated to describe the laws of nature. One frame space-time is a globally flat coordinate Minkowski space-time that acts as an inertial reference frame for the motions of fields, the other is a locally flat non-coordinate Gravifield space-time that functions as an interaction representation frame for the degrees of freedom of fields. The Gravifield is sided on both the globally flat coordinate space-time and locally flat non-coordinate space-time and characterizes the gravitational force. Instead of the principle of general coordinate invariance in Einstein theory of general relativity, some underlying principles with the postulates of coordinate independence and gauge invariance are motivated to establish the theory of quantum gravity. When transmuting the Gravifield basis into the coordinate basis in Minkowski space-time, it enables us to obtain equations of motion for all quantum fields and derive basic conservation laws for all symmetries. The gravity equation is found to be governed by the total energy-momentum tensor defined in the flat Minkowski space-time. When the spinnic and scaling gauge symmetries are broken down to a background structure that possesses the global Lorentz and scaling symmetries, we arrive at a Lorentz invariant and conformally flat background Gravifield space-time that is characterized by a cosmic vector with a non-zero cosmological mass scale. We also obtain the massless graviton and massive spinnon. The resulting universe is in general not isotropic in terms of conformal proper time and turns out to be inflationary in light of cosmic proper time. The conformal size of the universe has a singular at the cosmological horizon to which the cosmic proper time must be infinitely large. We show a mechanism for quantum inflation caused by the quantum loop contributions. The Gravifield behaves as a Goldstone-like field that transmutes the local spinnic gauge symmetry into the global Lorentz symmetry, which makes the spinnic gauge field becomes a hidden gauge field. As a consequence, the bosonic gravitational interactions can be described by the Goldstone-like Gravimetric field and space-time gauge field. The Einstein theory of general relativity is expected to be an effective low energy theory. Two types of gravity equation are resulted, one is the extension to Einstein's equation of general relativity, and the other is a new type of gravitational equation that characterizes the spinnon dynamics.
类目[WOS]: Physics, Nuclear ;  Physics, Particles & Fields
关键词[WOS]: GENERAL RELATIVITY ;  FIELD ;  INVARIANCE ;  BREAKING ;  FLATNESS ;  UNIVERSE ;  HORIZON ;  BOSON ;  MODEL ;  LHC
收录类别: SCI
项目资助者: National Science Foundation of China (NSFC) [11475237, 11121064, 10821504] ;  CAS Center for Excellence in Particle Physics (CCEPP)
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/20824
Appears in Collections:理论物理所2015年知识产出_期刊论文

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Recommended Citation:
Wu, YL. Theory of quantum gravity beyond Einstein and space-time dynamics with quantum inflation[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A,2015,30(28-29):1545002.
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