arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1204.4593gr-qc
收藏

f(T)引力中的好和坏四元数

Good and bad tetrads in f(T) gravity

Nicola Tamanini, Christian G. Boehmer

摘要:

研究了在研究$f(T)$引力场方程时,选择好的四分体的重要性。众所周知,这个理论在局部洛伦兹变换下不是不变的,因此四分体的选择在这样的模型中起着至关重要的作用。不同的四分体将导致不同的场方程,而场方程又具有不同的解。我们建议,如果四分体对$f(T)$的形式没有任何限制,就称之为好的四分体。采用本地旋转,我们构建良好的四分之一的上下文中的均匀性和各向同性,和球对称,在那里我们展示了如何找到Schwarzschild-德西特解决方案在真空中。我们的主要方法也应该适用于其他对称性。

英文摘要:

We investigate the importance of choosing good tetrads for the study of the field equations of $f(T)$ gravity. It is well known that this theory is not invariant under local Lorentz transformations, and therefore the choice of tetrad plays a crucial role in such models. Different tetrads will lead to different field equations which in turn have different solutions. We suggest to speak of a good tetrad if it imposes no restrictions on the form of $f(T)$. Employing local rotations, we construct good tetrads in the context of homogeneity and isotropy, and spherical symmetry, where we show how to find Schwarzschild-de Sitter solutions in vacuum. Our principal approach should be applicable to other symmetries as well.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑