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arXiv 0707.2639gr-qc
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关于广义相对论的Vierbein形式

On the vierbein formalism of general relativity

T. Mei

摘要:

在绝对Vierbein形式下讨论了Einstein-Hilbert作用量和Einstein方程。利用这种形式,我们证明了“动能“项,即,Einstein-Hilbert作用量的拉格朗日量中时间导数项的二次项是非正定的。在此基础上,给出了拉格朗日量中确定动能项为正的两组坐标条件,以及相应的确定动能项为正的作用量。在ADM分解的基础上,讨论了具有正确定动能项作用量的广义相对论的哈密顿表示和正则量子化,特别给出了具有正确定动能项作用量的哈密顿约束.最后,我们给出了一组规范条件,使得在十个爱因斯坦方程中没有任何二阶时间导数项。

英文摘要:

Both the Einstein-Hilbert action and the Einstein equations are discussed under the absolute vierbein formalism. Taking advantage of this form, we prove that the "kinetic energy" term, i.e., the quadratic term of time derivative term, in the Lagrangian of the Einstein-Hilbert action is non-positive definitive. And then, we present two groups of coordinate conditions that lead to positive definitive kinetic energy term in the Lagrangian, as well as the corresponding actions with positive definitive kinetic energy term, respectively. Based on the ADM decomposition, the Hamiltonian representation and canonical quantization of general relativity taking advantage of the actions with positive definitive kinetic energy term are discussed; especially, the Hamiltonian constraints with positive definitive kinetic energy term are given, respectively. Finally, we present a group of gauge conditions such that there is not any second time derivative term in the ten Einstein equations.

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