arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2001.02025gr-qchep-thmath-phmath.MP
收藏

非最小导数耦合的高维标量扭理论中的静态时空

Static Spacetimes In Higher Dimensional Scalar-Torsion Theories With Non-Minimal Derivative Coupling

Bobby E. Gunara, Mulyanto, Rahmat H. Alineng, Fiki T. Akbar, Hadi Susanto

摘要:

本文考虑了一类在标量势作用下,具有非最小导数耦合的高维($D \ge 4$)标量挠率理论中的静态时空,该时空共形于一个双曲面和一个$(D-2)$维子流形的乘积空间.通过对理论中的运动方程的分析,我们发现$(D-2)$维子流形必须具有常三重态结构,其中挠率标量是常三重态结构之一。这意味着这些运动方程可以简化为一个高度非线性的常微分方程,称为主方程。然后,我们表明,在这种情况下的解决方案承认至少有一个裸奇点的起源,这不是一个黑洞。在渐近区域,时空收敛到常数量曲率的空间,而这些空间通常不是爱因斯坦空间。我们也利用微扰方法将主方程线性化,并构造一阶解。最后,建立了主方程的局部-整体存在性分析,证明了正则整体解的不存在性。

英文摘要:

In this paper we consider a class of static spacetimes in higher dimensional ($D \ge 4$) scalar-torsion theories with non-minimal derivative coupling and the scalar potential turned on. The spacetime is conformal to a product space of a two-surface and a $(D-2)$-dimensional submanifold. Analyzing the equations of motion in the theory we find that the $(D-2)$-dimensional submanifold has to admit constant triplet structures in which the torsion scalar is one of them. This implies that these equations of motion can be simplified into a single highly non-linear ordinary differential equation called the master equation. Then, we show that in this case the solution admits at least a naked singularity at the origin which is not a black hole. In the asymptotic region, the spacetimes converge to spaces of constant scalar curvature which are generally not Einstein. We also use perturbative method to linearize the master equation and construct the first order solutions. At the end, we establish the analysis of local-global existences of the master equation and then, prove the non-existence of regular global solutions.

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。

↑