轴宇宙扩展：真空失稳、早期暗能量和宇宙学坍缩
The Axiverse Extended: Vacuum Destabilisation, Early Dark Energy and Cosmological Collapse
摘要：
在Arvanitaki等人（arXiv：0905.4720v2 [hep-th]）的“弦轴向”哲学中提出了一个模型，该模型通过质量项将超轻轴子耦合到其相应的模量。在宇宙膨胀的后期，光场在它们的势中滚动，并对暗区的能量密度有贡献。耦合和额外场的加入极大地丰富了轴宇宙的可能唯象。有许多有趣的阶段，其中轴子和模量分量表现为暗物质或暗能量，并且可以通过修改过去的状态方程或导致宇宙未来可能的坍缩来对宇宙的膨胀历史产生相当大的和明显的影响。在未来，这种耦合可能有助于减轻宇宙学轴子的微调问题。我们激励和提出的模型，并简要探讨其宇宙学的后果数值。
英文摘要：
A model is presented in the philosophy of the "String Axiverse" of Arvanitaki et al (arXiv:0905.4720v2 [hep-th]) that incorporates a coupling of ultralight axions to their corresponding moduli through the mass term. The light fields roll in their potentials at late times and contribute to the dark sector energy densities in the cosmological expansion. The addition of a coupling and extra field greatly enrich the possible phenomenology of the axiverse. There are a number of interesting phases where the axion and modulus components behave as Dark Matter or Dark Energy and can have considerable and distinct effects on the expansion history of the universe by modifying the equation of state in the past or causing possible future collapse of the universe. In future such a coupling may help to alleviate fine tuning problems for cosmological axions. We motivate and present the model, and briefly explore its cosmological consequences numerically.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
