Hybrid cosmological attractors
Hybrid cosmological attractors
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混合宇宙吸引子
DOI:
10.1103/physrevd.106.023522
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发表时间:
2022
影响因子:
5
通讯作者:
Linde, Andrei
中科院分区:
文献类型:
--
作者:
Kallosh, Renata;Linde, Andrei
We construct-attractor versions of hybrid inflation models. In these models, the potential of the inflaton fieldis uplifted by the potential of the second field. This uplifting ends due to a tachyonic instability with respect to the field, which appears whenbecomes smaller than some critical value. In the largelimit, these models have the standard universal-attractor predictions. In particular,for the exponential attractors. However, in some special cases, the largelimit is reached only beyond the horizon, for. This may change predictions for the cosmological observations. For any fixed, in the limit of large uplift, or in the limit of large, we find another attractor prediction,. By changing the parameters,and, one can continuously interpolate between the two attractor predictionsand. This provides significant flexibility, which can be very welcome in view of the rapidly growing amount and precision of the cosmological data. Our main result is not specific to the hybrid inflation models. Rather, it is generic to any inflationary models, where the inflaton potential, for some reason, is uplifted, and inflation ends prematurely.
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DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
Y. Yamada
通讯作者:
Y. Yamada
影响因子:
6.4
作者:
R. Kallosh;Andrei Linde
通讯作者:
Andrei Linde
影响因子:
6.4
作者:
R. Kallosh;Andrei Linde
通讯作者:
R. Kallosh;Andrei Linde
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
影响因子:
1.4
作者:
R. Kallosh;Andrei Linde
通讯作者:
Andrei Linde