论文标题
暗能量作为二次重力的发达后效应
Dark Energy as a Post-Inflation Effect in Quadratic Gravity
论文作者
论文摘要
我们通过分析和数值表明，宇宙扩展的加速度可以通过二次重力模型来解释，该模型已知能够触发足够的通货膨胀，而既没有负压物质也不是宇宙学常数。此外，我们确切地表明，该模型与爱因斯坦在辐射和物质主导时代的重力有很大不同，这给了非障碍的哈勃地平线和宇宙的平滑扩张历史。因此，它表明黑暗能量可能是二次重力的通货膨胀效应。我们还表明，该模型将所有爱因斯坦指标作为其解决方案。因此，爱因斯坦重力的经典测试不能伪造这一模型。
We analytically and numerically show that the acceleration of the cosmic expansion could be explained by a Quadratic Gravity model which is known to be able to trigger sufficient inflation, with neither negative pressure matter nor cosmological constant. Furthermore, we exactly show that this model differs greatly from Einstein's gravity in radiation and matter dominant era, giving a non-shrinking Hubble horizon and a smooth expansion history of the universe. Accordingly, it suggests that the Dark Energy could possibly be a post-inflation effect in Quadratic Gravity. We also show that this model admits all Einstein metrics as its solutions. Consequently, classic tests of Einstein's Gravity cannot falsify this model.
