Abedi Habib, Capozziello Salvatore
1Department of Physics, University of Tehran, North Kargar Ave, Tehran, Iran.
2Dipartimento di Fisica, Università di Napoli "Federico II", Via Cinthia, 80126 Naples, Italy.
Eur Phys J C Part Fields. 2018;78(6):474. doi: 10.1140/epjc/s10052-018-5967-x. Epub 2018 Jun 9.
Teleparallel theory of gravity and its modifications have been studied extensively in literature. However, gravitational waves has not been studied enough in the framework of teleparallelism. In the present study, we discuss gravitational waves in general theories of teleparallel gravity containing the torsion scalar , the boundary term and a scalar field . The goal is to classify possible new polarizations generalizing results presented in Bamba et al. (Phys Lett B 727:194-198, arXiv:1309.2698, 2013). We show that, if the boundary term is minimally coupled to the torsion scalar and the scalar field, gravitational waves have the same polarization modes of General Relativity.
引力的平移对称性理论及其修正已在文献中得到广泛研究。然而，在平移对称性框架下对引力波的研究还不够充分。在本研究中，我们讨论了包含挠率标量、边界项和标量场的平移对称引力一般理论中的引力波。目标是对可能的新极化进行分类，推广班巴等人（《物理快报B》727:194 - 198，arXiv:1309.2698，2013）给出的结果。我们表明，如果边界项与挠率标量和标量场进行最小耦合，引力波具有与广义相对论相同的极化模式。
