论文标题
2-2洞简化
2-2-holes simplified
论文作者
论文摘要
二次重力说明了黑洞的替换如何从重力完成中出现。 2-2孔是由于被困的正常物质而带有熵$ s_ {22} $的极其紧凑的无水平对象，因此，它们在概念上很容易理解。但是字段方程很麻烦，到目前为止，数值分析仅限于相对较小的尺寸解决方案。在这里，我们显示如何找到任意大型2-2孔的属性，包括重力波回声的时间延迟以及结果$ t_ \ infty s_ {22} = m/2 $。起点是根据乌龟坐标制定度量，并具有两个度量函数之一是保形因子。大型相关体积与2-2洞的内部相关。我们还讨论了对弱重力猜想的影响。
Quadratic gravity illustrates how a replacement for black holes can emerge from a UV completion of gravity. 2-2-holes are extremely compact horizonless objects with an entropy $S_{22}$ due to trapped normal matter, and in this way they are conceptually easy to understand. But the field equations are cumbersome and the numerical analysis has so far been restricted to relatively small size solutions. Here we show how the properties of arbitrarily large 2-2-holes can be found, including the time delay for gravitational wave echoes and the result $T_\infty S_{22}=M/2$. The starting point is to formulate the metric in terms of the tortoise coordinate, and to have one of the two metric functions be a conformal factor. A large conformally-related volume becomes associated with the interior of a 2-2-hole. We also discuss implications for the weak gravity conjecture.
