论文标题
延迟宇宙学的新加速解决方案
New accelerating solutions in late-time cosmology
论文作者
论文摘要
暗能量模型可以看作是动态系统。在本文中，我们表明具有弯曲场空间的多场模型产生了新的关键点，我们分析了它们的稳定性。这些是延迟宇宙学中新的加速解决方案，即使是陡峭的潜力也存在。即使量子校正破坏了潜在的潜力的平坦度，这也打开了实现精髓模型的可能性。这些非线性Sigma模型自然出现在超级和弦模型中，它们的多场动力学可以帮助避免滚动界限。
Dark energy models can be seen as dynamical systems. In this paper we show that multi-field models with a curved field space give rise to new critical points and we analyse their stability. These are new accelerating solutions in late-time cosmology which exist even for steep potentials. This opens up the possibility to realise quintessence models even when quantum corrections spoil the flatness of the underlying potential. These non-linear sigma models arise naturally in supergravity and string models where their multi-field dynamics can help to avoid swampland bounds.
