D-term inflation and nonperturbative Kahler potential of dilaton
D-term inflation and nonperturbative Kahler potential of dilaton
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D 项膨胀和膨胀的非微扰卡勒势
DOI：
10.1088/1126-6708/2004/07/035
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发表时间：
2004
影响因子：
5.4
通讯作者：
O. Seto
中科院分区：
文献类型：
--
作者：
Tetsutaro Higaki;Tatsuo C. Kobayashi;O. Seto
我们研究了膨胀子场具有非微扰Kahler势的D项膨胀情景。尽管在具有反常U(1)的杂交弦模型中，导致膨胀膨胀的FI项是由Kahler势相对于伸缩子的导数给出的，但过大的幅度对于可行的D项膨胀是有问题的。本文指出，含有非微扰项的Kahler势可以将FI项的大小降低到所希望的值，而势中的伸缩稳定化和D项控制都是由非微扰超势来实现的。
We study the D-term inflation scenario with a nonperturbative Kahler potential of the dilaton field. Although the FI term which leads an inflationary expansion is given by the derivative of the Kahler potential with respect to the dilaton in heterotic string models with anomalous U(1), the too large magnitude is problematic for a viable D-term inflation. In this paper, we point out that the Kahler potential with a nonperturbative term can reduce the magnitude of FI term to desired values while both the dilaton stabilization and D-term domination in the potential are realized by nonperturbative superpotential.