如果引力在未来变得非常排斥呢？
What if gravity becomes really repulsive in the future?
摘要：
宇宙的当前加速是当今理论物理学中最令人困惑的问题之一。我们远远没有就这封信的真实性质作出答复。然而，根据我们手头的观测结果，我们分析了引力势在未来可能表现出的不同模式。令人惊讶的是，在不久的将来，引力不仅会变弱，甚至会变得排斥;或者等价地，引力势可能会变成负值。我们通过使用我们能想象的暗能量的最简单的唯象模型来证明这一点。我们还回顾了这些模型的状态发现者方法。为了完整起见，我们还展示了这些简单（但说明性的）模型中暗物质和暗能量密度对比的行为。我们的结果显示在目前和他们如何演变的未来。
英文摘要：
The current acceleration of the Universe is one of the most puzzling issues in theoretical physics nowadays. We are far from giving an answer on this letter to its true nature. Yet, with the observations we have at hand, we analyse the different patterns that the gravitational potential can show in the future. Surprisingly, gravity not only can get weaker in the near future, it can even become repulsive; or equivalently, the gravitational potential may become negative. We show this remark by using one of the simplest phenomenological model we can imagine for dark energy. We have as well reviewed the statefinder approach of these models. For completeness, we have also showed the behaviour of the density contrast of dark matter and dark energy for these simple (yet illustrative models). Our results are displayed at present and how they evolve in the future.
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