Chameleons on the racetrack

被引：0
|
作者：
Horatiu Nastase
Amanda Weltman
机构：
[1] UNESP-Universidade Estadual Paulista,Instituto de Física Teórica
[2] University of Cape Town,Astrophysics, Cosmology & Gravity Center, Department of Mathematics and Applied Mathematics
来源：
Journal of High Energy Physics | / 2013卷
关键词：
Cosmology of Theories beyond the SM; dS vacua in string theory; Supergravity Models;
D O I：
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中图分类号：
学科分类号：
摘要：
We modify the ansatz for embedding chameleon scalars in string theory proposed in [1] by considering a racetrack superpotential with two KKLT-type exponentials eiaϱ instead of one. This satisfies all experimental constraints, while also allowing for the chameleon to be light enough on cosmological scales to be phenomenologically interesting.
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