Moduli stabilization and cosmology of type IIB on SU(2)-structure orientifolds
Moduli stabilization and cosmology of type IIB on SU(2)-structure orientifolds
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SU(2)结构东方褶皱上的IIB型模量稳定性和宇宙学
DOI：
10.1007/jhep04(2010)011
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发表时间：
2009
影响因子：
5.4
通讯作者：
M. Zagermann
中科院分区：
文献类型：
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作者：
C. Caviezel;T. Wrase;M. Zagermann
我们考虑具有O5和O7平面的六维SU(2)结构流形上的IIB型磁通紧化。这些六维空间不仅允许F3和H3通量，而且还允许F1和F5通量。我们推导了这种紧致化的四维数学式{N}$=1标量势，并给出了一个完全稳定的大体积小弦耦合ADS真空的例子。然后，我们讨论了这些紧凑化的宇宙学方面，并导出了几个在一定条件下禁止DS真空和慢滚膨胀的不去定理。我们还研究了陪集和扭曲环面的具体例子，发现我们的禁忌定理禁止DS真空和慢滚膨胀，只有一个例外。对于后者，我们找到了ϵ为零的DS临界点。然而，该点有两个速子和eta参数η≈−3.1。
We consider type IIB flux compactifications on six-dimensional SU(2)-structure manifolds with O5- and O7-planes. These six-dimensional spaces allow not only for F3 and H3 fluxes but also for F1 and F5 fluxes. We derive the four-dimensional $$ \mathcal {N} $$ = 1 scalar potential for such compactifications and present one explicit example of a fully stabilized AdS vacuum with large volume and small string coupling. We then discuss cosmological aspects of these compactifications and derive several no-go theorems that forbid dS vacua and slow-roll inflation under certain conditions. We also study concrete examples of cosets and twisted tori and find that our no-go theorems forbid dS vacua and slow-roll inflation in all but one of them. For the latter we find a dS critical point with ϵ numerically zero. However, the point has two tachyons and eta-parameter η ≈ −3.1.