Pole N-flation
Pole N-flation
复制标题
极N-膨胀
DOI：
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发表时间：
2018
影响因子：
5.4
通讯作者：
A. Westphal
中科院分区：
文献类型：
--
作者：
M. Dias;J. Frazer;A. Retolaza;M. Scalisi;A. Westphal
标量动力学项中的二阶极点可以导致一类具有普适预测的暴胀模型，称为极点暴胀或α-吸引子。虽然这种动力学结构在超重力有效场论中无处不在，但在弦理论中实现一致的UV完整模型是一项重要的任务。首先，人们期望在极点附近产生量子校正，这可能会破坏典型的吸引子动力学。作为一个保守的估计范围的超引力模型的极点膨胀，我们采用弱引力猜想（WGC）。我们发现，这限制了可访问的一部分，通过限制衰变常数的轴子合作伙伴的通货膨胀高原。对于原始的单复场模型，WGC甚至不允许暴胀子到达暴胀平台区。我们分析，如果唤起援助的N标量场的开弦模有助于解决这些问题。极氮膨胀可以通过减少每个单独场的所需范围来改善辐射控制。然而，如果我们施加子格WGC，则对于单个这样的场，即使对于N个这样的标量的集体运动，禁止极点暴胀的WGC界也仍然存在。最后，我们概述了嵌入的极点N-膨胀在IIB型弦理论上的嵌入卡-丘流形的步骤。
A bstractA second order pole in the scalar kinetic term can lead to a class of inflation models with universal predictions referred to as pole inflation or α-attractors. While this kinetic structure is ubiquitous in supergravity effective field theories, realising a consistent UV complete model in e.g. string theory is a non-trivial task. For one, one expects quantum corrections arising in the vicinity of the pole which may spoil the typical attractor dynamics. As a conservative estimate of the range of validity of supergravity models of pole inflation we employ the weak gravity conjecture (WGC). We find that this constrains the accessible part of the inflationary plateau by limiting the decay constant of the axion partner. For the original single complex field models, the WGC does not even allow the inflaton to reach the inflationary plateau region. We analyze if evoking the assistance of N scalar fields from the open string moduli helps addressing these problems. Pole N-flation could improve radiative control by reducing the required range of each individual field. However, the WGC bound prohibiting pole inflation for a single such field persists even for a collective motion of N such scalars if we impose the sublattice WGC. Finally, we outline steps towards an embedding of pole N-flation in type IIB string theory on fibred Calabi-Yau manifolds.
影响因子：
6.4
作者：
Andrei Linde;Dong-Gang Wang;Y. Welling;Y. Yamada;A. Achúcarro
通讯作者：
Andrei Linde;Dong-Gang Wang;Y. Welling;Y. Yamada;A. Achúcarro
随机势中的多场膨胀
影响因子：
6.4
作者：
Bjorkmo T
通讯作者：
Bjorkmo T
走出沼泽的缠绕：用F项缠绕膨胀规避弱引力猜想？
影响因子：
4.4
作者：
A. Hebecker;P. Mangat;F. Rompineve;L. T. Witkowski
通讯作者：
L. T. Witkowski