论文标题
有效的标量调查描述了四个维
Effective scalar-tensor description of regularized Lovelock gravity in four dimensions
论文作者
论文摘要
我们将最近提出的正规化版本的Lovelock Gravity在四个维度上重新制定为标量调整理论。通过通过kaluza-klein降低来促进内部空间的扭曲因子为标量的自由度，我们表明，可以通过Horndeski理论的某个子类有效地描述了正则化的Lovelock Gravity。研究了这一特定标量调整理论的宇宙学方面。发现具有标量电荷的背景通常允许。简要讨论了这种标量费的后果。
We reformulate the recently proposed regularized version of Lovelock gravity in four dimensions as a scalar-tensor theory. By promoting the warp factor of the internal space to a scalar degree of freedom by means of Kaluza-Klein reduction, we show that regularized Lovelock gravity can be described effectively by a certain subclass of the Horndeski theory. Cosmological aspects of this particular scalar-tensor theory are studied. It is found that the background with a scalar charge is generically allowed. The consequences of this scalar charge are briefly discussed.
