Impacts of supersymmetric higher derivative terms on inflation models in supergravity
Impacts of supersymmetric higher derivative terms on inflation models in supergravity
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DOI：
10.1088/1475-7516/2015/07/020
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发表时间：
2015-04
影响因子：
6.4
通讯作者：
Shuntaro Aoki;Y. Yamada
中科院分区：
文献类型：
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作者：
Shuntaro Aoki;Y. Yamada
我们讨论了超对称高阶导数项对超引力暴胀模型的影响。结果表明，如果高阶导数算子的截止尺度足够小，这些项一般会修改暴胀过程中暴胀子的有效动力学系数。在这种情况下，超引力中的η-问题不再出现，暴胀子的有效势一般变为幂次小于2的幂型势。
We show the effects of supersymmetric higher derivative terms on inflation models in supergravity. The results show that such terms generically modify the effective kinetic coefficient of the inflaton during inflation if the cut off scale of the higher derivative operators is sufficiently small. In such a case, the η-problem in supergravity does not occur, and we find that the effective potential of the inflaton generically becomes a power type potential with a power smaller than two.