The cosmological constant and the weak gravity conjecture
arxiv(2024)
摘要
We examine the descent via membrane nucleation through a landscape of vacua
where the cosmological constant is given by a combination of four-form fluxes.
It has been shown that this descent can be slowed exponentially for very low
curvature vacua close to Minkowski space in a wide class of models satisfying
certain parametric conditions, providing a possible solution to the
cosmological constant problem. We explore in detail whether or not those
parametric conditions are compatible with the membrane weak gravity conjecture.
Whilst it is true that there is often tension, we show that this is not always
the case and present an explicit model where Minkowski space is absolutely
stable and the weak gravity conjecture is satisfied. This corresponds to an
extension of the Bousso-Polchinski model into a generalised DBI action for
four-forms. We also clarify how the landscape should be populated in a
consistent model.
更多查看译文
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要