论文标题
宇宙学中的一些主题 - 通过简单的例子清楚地解释了
Some topics in Cosmology -- Clearly explained by means of simple examples --
论文作者
论文摘要
这是对现代宇宙学中一些关键问题的非常可理解的评论。随时，总是使用简单的数学示例和类比。起点是知名的大爆炸宇宙学（BBC）。我们处理该理论中出现的数学奇异性，并讨论了将其删除的一些方法。接下来，在通过一些明确的例子引入通货膨胀范式之前，我们会回顾旧BBC模型的地平线和平坦性问题。然后，我们将当前的宇宙加速度考虑在于以统一的方式处理两个加速时期的程序，我们研究了典型的通货膨胀。最后，在通货膨胀结束后发生的引力颗粒产生的重新加热阶段是简单的数学术语来讨论的，它通过在典型通货膨胀的背景下涉及所谓的$α$ - 吸引者。
This is a very comprehensible review of some key issues in Modern Cosmology. Simple mathematical examples and analogies are always used, whenever available. The starting point is the well know Big Bang Cosmology (BBC). We deal with the mathematical singularities appearing in this theory and discuss some ways to remove them. Next, and before introducing the inflationary paradigm by means of some clear examples, we review the horizon and flatness problems of the old BBC model. We then consider the current cosmic acceleration and, as a procedure to deal with both periods of acceleration in a unified way, we study quintessential inflation. Finally, the reheating stage of the universe, via gravitational particle production, which took place after inflation ended, is discussed in simple mathematical terms, by involving the so-called $α$-attractors in the context of quintessential inflation.
