ar X iv : h ep - p h / 04 12 14 5 v 1 1 3 D ec 2 00 4 Chain Inflation : “
نویسنده
چکیده
We propose the model of Chain Inflation, in which a sequential chain of coupled scalar fields drives inflation. Motivated by the stringy landscape, we allow the number of fields to be very large, ranging from hundreds to many more; we note that the model is quite general and applies to any multidimensional potential, in string theory or otherwise. Each stage of inflation (which can be thought of as one of the fields achieving its true vacuum) contributes only a fraction of an e-fold. The coupling between the fields is crucial to achieve reheating. We focus in particular on a sequential chain of tunneling fields, where the nucleation rate of each of the fields is catalyzed to change radically from slow to fast by the interaction with other fields in the chain, so that “graceful exit” is achieved. The model is quite generic and succeeds for natural couplings and parameters. [email protected] [email protected]
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