标题： 吸引力和排斥力重力 显示英文标题

标题： Attractive and Repulsive Gravity

摘要： 我们讨论重力可能表现为排斥而非吸引的情况。 特别是我们说明为什么我们对太阳系距离尺度的重力直觉不一定能作为在更大距离尺度（如宇宙学尺度）上重力现象行为的可靠指南，并且认为实际上在这些距离尺度上重力确实会表现出排斥作用。 在这种排斥作用下，一系列当前的宇宙学问题（平坦性、视界、暗物质、宇宙年龄、宇宙加速膨胀和宇宙学常数问题）都能自然地得到解决。 显示英文摘要

摘要： We discuss the circumstances under which gravity might be repulsive rather than attractive. In particular we show why our standard solar system distance scale gravitational intuition need not be a reliable guide to the behavior of gravitational phenomena on altogether larger distance scales such as cosmological, and argue that in fact gravity actually gets to act repulsively on such distance scales. With such repulsion a variety of current cosmological problems (the flatness, horizon, dark matter, universe age, cosmic acceleration and cosmological constant problems) are then all naturally resolved.