论文标题
黑洞，具有宇宙常数在大黄蜂重力中
Black holes with a cosmological constant in bumblebee gravity
论文作者
论文摘要
在这项工作中，我们提出了Bumblebee重力中具有宇宙常数的黑洞溶液，该解决方案通过假设对BumbleBee场的非零真空期望值来为洛伦兹对称性违规提供了一种机制。从引力的角度来看，这种溶液在球形对称的黑洞中具有有效的宇宙常数，并由各向异性的能量摩托张量支撑，被认为是时空几何形状中大黄蜂场的表现。然后，我们计算出带有有效宇宙常数的拟议黑洞溶液的阴影角半径。特别是，我们的结果是大黄蜂字段与阴影角度大小之间的第一个关系。
In this work, we present black hole solutions with a cosmological constant in bumblebee gravity, which provides a mechanism for the Lorentz symmetry violation by assuming a nonzero vacuum expectation value for the bumblebee field. From the gravitational point of view, such solutions are spherically symmetric black holes with an effective cosmological constant and are supported by an anisotropic energy-momentum tensor, conceived of as the manifestation of the bumblebee field in the spacetime geometry. Then we calculate the shadow angular radius for the proposed black hole solution with a positive effective cosmological constant. In particular, our results are the very first relation between the bumblebee field and the shadow angular size.
