An Extended New General Relativity as a Reduction of <Poincare>^^^- Gauge Theory of Gravity : Generators of Internal and Coordinate Transformations : Particles and Fields
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概要
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An extended new general relativity (E. N. G. R.) is formulated as a reduction of <Poincare>^^^-e gauge theory (P^^-. G. T.) of gravity whose gauge group is the covering group of the Poincare group. Fundamental fields in the theory are a Higgs-type field ψ^k, and the translational gauge potential A^k_μ and a matter field φ^a. The components e^k_μ of the duals of the vierbein fields are given by e^k_μ=∇*_μψ^k=ψ^k,_μ+A^k_μ. Internal translation and the field ψ^k, which the conventional new general relativity lacks, play fundamental roles in E. N. G. R. as well as in P^^-. G. T. The restrictions on the Lagrangian density, identities and differential conservation laws following from the (local internal translation ⊗__- global SL(2, C)) ⊗ general coordinate transformations are given. For the specific gravitational Lagrangian L^T=-(1/3_K)t^<klm>t_<klm>+(1/3_K)ν^kν_k+a_3a^k_k, the generators of internal <Poincare>^^^- and general affine coordinate transformations for an isolated system are examined. The results are quite parallel to those in P. G. T., but the former is not trivial reductions of the latter. The following is worth noticing also in E. N. G. R.: For the case in which {ψ^k, A^k_μ, φ^a} with ψ^k≃e^<(o)k>_μy^μ+ ψ^<(o)k> is employed as the set of independent variables, (a) the generators of (internal translation ⊗ SL(2, C)) give the energy-momentum and the total angular momentum for an isolated system, and (b) the generators of general affine coordinate transformations vanish and are trivial.
- 理論物理学刊行会の論文
- 1991-04-25
著者
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KAWAI Toshiharu
Department of Medical Genetics, Graduate School of Comprehensive Human Sciences, University of Tsuku
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Kawai T
Okaya Shinnichi Corporation Of America
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TOMA Naoki
Department of Physics, Osaka City University
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Toma Naoki
Department Of Neurosurgery Mie University School Of Medicine
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Toma Naoki
Department Of Physics Osaka City University
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Kawai Toshiharu
Department Of Medical Genetics Graduate School Of Comprehensive Human Sciences University Of Tsukuba
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