A Candidate for a Renormalizable and Diffeomorphism-Invariant 4D Quantum Theory of Gravity
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概要
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We present evidence that there is a 4D model that satisfies the conditions of renormal-izability and diffeomorphism invariance simultaneously at the 2-loop level.The traceless mode is treated perturbatively, while the conformal mode can be managed exactly.The two conditions constrain the theory strongly and determine the measure of the gravitational field uniquely.Quantum corrections of the cosmological constant are computed in part to 3-loop diagrams.The method to remove the negative-metric states is also discussed from the viewpoint of diffeomorphism invariance in analogy to the R_ε gauge in spontaneously bro-ken gauge theory.The model may be a candidate for a continuum version of 4D simplicial quantum geometry realized in recent numerical simulations.
- 理論物理学刊行会の論文
- 2000-06-25
著者
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Hamada K
High Energy Accelerator Res. Organization (kek) Tsukuba Jpn
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Hamada Ken-ji
High Energy Accelerator Research Organization (kek)
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Hamada Ken-ji
Institute Of Particle And Nuclear Studies High Energy Accelerator Research Organization (kek)
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Hamada Ken-ji
Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK)
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