论文标题
F（t）理论中的大地测量一致性和崩溃的恒星分布
Geodesic Congruences and a Collapsing Stellar Distribution in f (T ) Theories
论文作者
论文摘要
远程平行重力（TG）将重力描述为扭转 - 而不是基于曲率的效果。与重力的基于曲率的结构一样，可以提出几种不同的公式，其中一种是电触电等效的一般相对性（TEGR），在动态上等同于GR。在这项工作中，我们探讨了在TEGR上进行了两种重要修饰的背景下，在空间上均匀崩溃的体体的演变，即F（t）重力，即F（t）重力，这是F（R）重力的TG类似物，并且与非微小相结合的标量与标量领域在TG中在TG中的效果变得流行。我们探讨了测量偏差在研究附近颗粒的一致性代替Raychaudhuri方程方面的一致性。我们发现F（t）模型满足无效的能量条件并描述有趣的崩溃曲线。在非最小耦合标量场的情况下，我们还发现具有引人入胜的标量场演化曲线的潜在崩溃模型。
Teleparallel Gravity (TG) describes gravitation as a torsional- rather than curvature-based effect. As in curvature-based constructions of gravity, several different formulations can be proposed, one of which is the Teleparallel equivalent of General Relativity (TEGR) which is dynamically equivalent to GR. In this work, we explore the evolution of a spatially homogeneous collapsing stellar body in the context of two important modifications to TEGR, namely f (T) gravity which is the TG analogue of f (R) gravity, and a nonminimal coupling with a scalar field which has become popular in TG for its effects in cosmology. We explore the role of geodesic deviation to study the congruence of nearby particles in lieu of the Raychaudhuri equation. We find f (T) models that satisfy the null energy condition and describe interesting collapse profiles. In the case of a nonminimally coupled scalar field, we also find potential collapse models with intriguing scalar field evolution profiles.
