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arXiv 1609.00385hep-thastro-ph.COgr-qchep-ph
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完善de Sitter经典景观的边界

Refining the boundaries of the classical de Sitter landscape

David Andriot, Johan Blåbäck

摘要:

我们推导出高度约束的no-go定理经典德西特背景的弦论,与平行的来源,这应该会影响嵌入宇宙模型。我们研究了四维de Sitter时空中紧致流形上具有平行和反向作用的定向折叠OP-平面和DP-膜的II型超引力的10维真空。对于p=3,7或8的严格约束被完全排除,并且我们得到了p=4,5,6的严格约束。这是通过推导四维Ricci标量的启发性表达式来实现的。进一步得到有趣的表达式和不可行定理。本文件自成一体,因此,包括公约在内的技术方面可能会引起更广泛的兴趣。

英文摘要:

We derive highly constraining no-go theorems for classical de Sitter backgrounds of string theory, with parallel sources; this should impact the embedding of cosmological models. We study ten-dimensional vacua of type II supergravities with parallel and backreacted orientifold Op-planes and Dp-branes, on four-dimensional de Sitter space-time times a compact manifold. Vacua for p=3, 7 or 8 are completely excluded, and we obtain tight constraints for p=4, 5, 6. This is achieved through the derivation of an enlightening expression for the four-dimensional Ricci scalar. Further interesting expressions and no-go theorems are obtained. The paper is self-contained so technical aspects, including conventions, might be of more general interest.

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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