弦紧化中具有层次轻轴子的N-膨胀
N-flation with Hierarchically Light Axions in String Compactifications
摘要：
我们提出了一个明确的嵌入IIB型弦紧化的轴子N-flation，其中大多数的Kahler模是稳定的微扰效应，所以层次上比相应的N >> 1轴子，其集体动力学驱动通货膨胀。这是在模量稳定的大批量情景框架内实现的。我们的设置可以用来实现一个模型的通货膨胀或精髓，只是通过改变体积的内部空间，控制规模的轴子潜力。这两种情况都预示着超对称性破缺的规模非常大。由于驱动暴胀的N个轻轴子的微扰衰变，在暴胀结束后可以实现标准模型自由度的可行再加热。
英文摘要：
We present an explicit embedding of axionic N-flation in type IIB string compactifications where most of the Kahler moduli are stabilised by perturbative effects, and so are hierarchically heavier than the corresponding N >> 1 axions whose collective dynamics drives inflation. This is achieved in the framework of the LARGE Volume Scenario for moduli stabilisation. Our set-up can be used to realise a model of either inflation or quintessence, just by varying the volume of the internal space which controls the scale of the axionic potential. Both cases predict a very high scale of supersymmetry breaking. A viable reheating of the Standard Model degrees of freedom can be achieved after the end of inflation due to the perturbative decay of the N light axions which drive inflation.
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