标题： 时空泡沫，中子超空间，以及宇宙常数 显示英文标题

标题： Spacetime foam, midisuperspace, and the cosmological constant

摘要： 也许宇宙常数在普朗克尺度上确实很大，但被时空的普朗克尺度量子涨落所“隐藏”。我简要回顾了这一设想，并提供了一些证据，这些证据来自一个简化的中对称空间模型，表明适当的“泡沫状”结构可以完成隐藏大宇宙常数的任务，并且可以在时间演化下持续存在。 显示英文摘要

摘要： Perhaps the cosmological constant really is huge at the Planck scale, but is "hidden" by Planck scale quantum fluctuations of spacetime. I briefly review this proposal and provide some evidence, coming from a simplified midisuperspace model, that an appropriate "foamy" structure can do the job of hiding a large cosmological constant, and can persist under time evolution.