首页> 外文期刊>International journal of modern physics, D. Gravitation, astrophysics, cosmology >On the gravitational energy-momentum vector in f(T) theories
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On the gravitational energy-momentum vector in f(T) theories

机译:关于f(T)理论中的重力能量动量矢量

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摘要

This work is devoted to present and analyze an expression for the gravitational energy-momentum vector in the context of f(T) theories through field equations. Such theories are the analogous counterpart of the well-known f(R) theories, except using torsion instead of curvature. We obtain a general expression for the gravitational energy-momentum vector in this framework. Using the hypothesis of the isotropy of spacetime, we find the gravitational energy for a closed universe, since construction of real tetrads that do not constrain the functional form of the Lagrangian density was not possible for an open universe. Thus, we find a vanishing gravitational energy for the tetrad that we have used.
机译:这项工作致力于通过场方程在f(T)理论的背景下呈现和分析重力能量动量矢量的表达式。这些理论与众所周知的f(R)理论类似,但使用扭转代替曲率。我们在此框架中获得了重力能量动量矢量的一般表达式。使用时空各向同性的假设,我们找到了一个封闭宇宙的引力能量,因为对于开放宇宙来说,构造不约束拉格朗日密度函数形式的实四面体是不可能的。因此,我们发现所使用的四分位数的引力消失了。

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