论文标题
大黄蜂重力中的gödel型宇宙
Gödel-type universes in bumblebee gravity
论文作者
论文摘要
大黄蜂场与重力相结合。该引力理论表现出洛伦兹对称性的自发断裂。引入了哥德尔型宇宙，然后研究了因果关系及其违规行为。对于物质的不同含量，获得了因果和非毒害Gödel-type溶液。另外，当控制大黄蜂场与重力场之间相互作用的耦合常数为零时，大黄蜂电位可能与一般相对性的宇宙学常数值有关。此外，还研究了非零耦合常数的情况。
The bumblebee field coupled with gravity is considered. This gravitational theory exhibits spontaneous breaking of Lorentz symmetry. The Gödel-type universe is introduced and then the causality and its violation are studied. Causal and non-causal Gödel-type solutions are obtained for different content of matter. In addition, when the coupling constant, which controls the interaction between the bumblebee field and the gravitational field, is zero the bumblebee potential may be associated with the value of the cosmological constant of the general relativity. Furthermore, the case with the non-zero coupling constant is also investigated.
