论文标题
深色泡沫宇宙学中小且积极的宇宙学常数的严格实现
A stringy realization of a small and positive cosmological constant in dark bubble cosmology
论文作者
论文摘要
在本文中，我们构建了一个在额外的尺寸旋转的麸皮的帮助下，构造了扩展4D宇宙学的深色气泡模型的串起嵌入。宇宙骑着一个气泡，该气泡已在不稳定的较高尺寸背景下成核。因此，我们的构建是Vilenkin量子宇宙学的弦理论实现。尽管宇宙常数以最低顺序消失，但弱重力猜想预测的环校正可以诱导现象学上可行的值。该模型预测了与观察约束兼容的大额外维度的存在，我们注意到与黑暗维度建议的可能联系。
In this paper we construct a stringy embedding of the dark bubble model of an expanding 4D cosmology with the help of branes rotating in extra dimensions. The universe rides a bubble which has nucleated in an unstable higher dimensional background. Our construction is therefore a string theoretical realization of Vilenkin's quantum cosmology. While the cosmological constant vanishes at lowest order, loop corrections predicted by the Weak Gravity Conjecture can induce a phenomenologically viable value. The model predicts the existence of large extra dimensions compatible with observational constraints, and we note a possible connection with the dark dimension proposal.
