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arXiv 1306.3211hep-thastro-ph.COgr-qchep-ph
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混沌暴胀模型λ <$^4/4 -<$/ 2 <$^2 R的超共形推广

Superconformal Generalization of the Chaotic Inflation Model λϕ^4/4 - ξ/ 2 ϕ^2 R

Renata Kallosh, Andrei Linde

摘要:

基于势为λ <$^4的标量场理论的混沌暴胀模型与观测数据完全吻合,只要在模型中加入一个微小的非最小引力耦合--λ/2 <$^2 R,且λ> 0.002。我们描述嵌入到超共形对称性自发破缺的超共形理论,并进入超引力这个模型。一个具有小参数的模型在技术上是自然的:将小参数设为零会导致基础超共形理论中的一个增强对称点。

英文摘要:

A model of chaotic inflation based on the theory of a scalar field with potential λϕ^4 perfectly matches the observational data if one adds to it a tiny non-minimal coupling to gravity -ξ/2 ϕ^2 R with ξ> 0.002. We describe embedding of this model into the superconformal theory with spontaneous breaking of superconformal symmetry, and into supergravity. A model with small ξis technically natural: setting the small parameter ξto zero leads to a point of enhanced symmetry in the underlying superconformal theory.

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