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arXiv 1902.10093hep-thastro-ph.COgr-qchep-phmath.DG
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关于经典de Sitter解的开放问题

Open problems on classical de Sitter solutions

David Andriot

摘要:

经典的10维弦背景与4维德西特时空,D-膜和orientifold源,通常被认为满足以下条件:1。没有经典的de Sitter解决方案与平行源。2.具有相交源的经典de Sitter解是不稳定的。3.经典的德西特解决方案不能同时有一个大的内部体积,一个小的弦耦合,一个有限数量的orientifolds和量子化通量。这三个假设与沼泽地计划特别相关,如果是真的,它们将挑战弦论与宇宙学的联系。我们在这里限制到一个标准的解决方案animals的问题是明确的,我们仍然无法证明分析这些aesturtures。在开发新的工具和获得新的约束条件,我们确定剩余的角落参数空间,反例,这些acquitures可以找到。

英文摘要:

Classical 10d string backgrounds with a 4d de Sitter space-time, D-brane and orientifold sources, are commonly believed to satisfy the following: 1. There is no classical de Sitter solution with parallel sources. 2. Classical de Sitter solutions with intersecting sources are unstable. 3. Classical de Sitter solutions cannot have at the same time a large internal volume, a small string coupling, a bounded number of orientifolds and quantized fluxes. These three conjectures are of particular relevance to the swampland program, and if true, they challenge the connection of string theory to cosmology. We restrict here to a standard solution ansatz for which the problem is well-defined, and we still fail to prove analytically any of these conjectures. While developing new tools and obtaining new constraints, we identify remaining corners of parameter space where counter-examples to these conjectures could be found.

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。

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